One stop solution for K gold/stainless steel case accessories factory

Preface: Industry Track Prospects and Core Positioning of Solutions

Since its establishment in 2003, Yihui Casting has been deeply involved in the field of precision casting for 23 years. It has helped over 10000 jewelry factories and luxury goods processing plants worldwide complete production line upgrades and automation transformations. Relying on independently developed nanoscale precision casting equipment, high vacuum melting technology, and mature standardized mass production processes, Yihui Casting has created a one-stop solution for high-end watch case processing plants, targeting the core pain points of ultra-high precision molding, nanoscale surface smoothness, defect free complex structures, stable material performance, and environmental compliance.

The plan covers the entire process from factory flow planning, clean room construction, production line construction, equipment matching, watch exclusive process training to mass production landing, quality control system construction, and brand resource docking. It does not require senior precision manufacturing technicians, high investment, or large-scale factory buildings. The production line construction and production can be completed in 7 days, perfectly adapting to 18K gold, 316L medical stainless steel, titanium alloy all materials, covering all categories of watch accessories such as watch cases, bezel, strap, and buckle. It also takes into account small batch customization, large batch stable supply, and brand explosive quick response order scenarios, completely solving the core problems of high-end watch case accessory processing factories, helping factories quickly become core suppliers of top high-end watch brands, and seizing the industry's explosive dividends.

As a luxury category that combines craftsmanship value and collectible attributes, high-end watches have seen steady growth in demand in the domestic market in recent years. The rapid rise of domestic high-end watch brands has also driven an explosion in demand for precision watch case accessories processing. However, there is a significant structural gap on the supply side: over 90% of traditional jewelry processing factories cannot meet the dimensional accuracy requirements of ± 0.005mm for high-end watches, over 80% of supporting factories cannot meet the nano level surface finish standards, and high-quality production capacity is seriously insufficient. The order schedule for top brands generally exceeds 4 months.

From the perspective of market demand, the core requirements of high-end watch brands for case accessory processing factories have reached the extreme:

Extreme precision requirements: The size accuracy of the watch case and bezel accessories is ± 0.005mm, perfectly adapting to the waterproof structure and assembly accuracy requirements of the watch, with a waterproof level of over 100 meters;

Top level surface quality: nano level surface smoothness, no scratches, sand holes, or orange peel patterns, perfectly matching the mirror effect and texture requirements of high-end watches;

Material performance stabilization: K gold/stainless steel/titanium alloy has uniform composition, no oxidation, and no impurities, with stable material performance that meets the long-term wear and durability requirements of high-end watches;

Batch consistency 100%: The size, weight, and surface effect of the same batch of watch cases are completely consistent without any deviation, meeting the brand's standardized batch production needs;

Clean production environment: Produced in a 10000 level clean workshop, free of dust and impurities, eliminating residual foreign objects inside the watch case, and meeting the quality control standards of high-end watches.

From the supply side, the existing high-end watch processing factories in China generally have a pattern of "small scale, weak technology, and low standards": according to the "2025 China Precision Manufacturing Industry Research Report", there are more than 1200 domestic processing factories mainly engaged in high-end watch cases, of which more than 82% are small and medium-sized factories with 10-20 employees, and the factory area is concentrated in 100-200 square meters, which is the core component of the industrial chain. However, at the same time, the one-year memory activity rate of small and medium-sized supporting processing plants is only 32.7%, and the core is stuck in five core problems: substandard accuracy, poor surface quality, unstable materials, poor batch consistency, and environmental non-compliance. More than 85% of factories are unable to undertake stable orders from top high-end watch brands and can only compete at low prices in the low-end market.

Current situation and core pain points of high-end watch case accessory processing factories in the industry

Current situation of industry entrepreneurship

From the perspective of supporting processing data, although the market demand for high-end watch cases has exploded, the success rate of small and medium-sized processing factories is less than 32.7%. The core constraints are concentrated in six dimensions: high technological barriers, precision control, surface quality, material stability, batch consistency, and environmental compliance. According to industry research data,:

Over 88% of small and medium-sized processing plants have insufficient equipment accuracy, with a case size error of over 0.05mm, substandard waterproof structures, a waterproof qualification rate of less than 60%, and a brand customer complaint rate of over 40%;

Over 82% of factories, due to outdated polishing technology, have a surface finish of the watch case that cannot reach the nanometer level, resulting in scratches, sand holes, and orange peel patterns, which cannot meet the quality requirements of high-end watches;

Over 75% of factories, due to improper melting processes, have uneven composition, oxidation, impurities in K gold/stainless steel materials, unstable material properties, and are prone to discoloration and deformation when worn;

Over 70% of factories adopt a semi manual production mode, with a deviation of over 0.1g in case size and weight between batches, uneven surface effects, and inability to undertake bulk orders;

Over 65% of factories lack professional clean rooms and environmental treatment equipment, making it impossible to meet the inspection requirements of high-end watch brands and missing out on high profit stable orders.

Core production process difficulties and pain points

High end watch cases belong to typical "thin-walled complex precision castings", involving interdisciplinary technologies such as materials science, fluid mechanics, thermodynamics, and precision machinery. The production process chain is long, the precision requirements are high, and the process control is difficult. Any micrometer level deviation in any link can lead to the scrapping of the finished product. Traditional craftsmanship has technical bottlenecks that cannot be overcome in the following core areas.

7 core pain points of supporting processing plants

Insufficient mass production capability

High end watches require a case size accuracy of ± 0.005mm, while traditional processing factories use ordinary casting equipment. The size errors of the case stone position and waterproof groove are generally above 0.05mm, resulting in the inability of the waterproof rubber ring to fit and the waterproof level not meeting the requirements. The brand's customer complaint rate exceeds 40%, and not only do they have to bear the loss of returns, but they will also be terminated by the brand.

Poor surface finish

Traditional manual polishing cannot achieve nanometer level surface smoothness, and the surface of the watch case is prone to scratches, sand holes, orange peel patterns, uneven glossiness, and cannot match the mirror effect and luxurious texture of high-end watches. It cannot pass brand quality control acceptance and loses more than 80% of high-end orders.

Unstable material performance

K gold has a high melting point and stainless steel is prone to oxidation. Over 75% of factories have misconceptions about the melting process and use ordinary melting furnaces and graphite crucibles, resulting in uneven material composition, oxidation, and impurities. The watch case is prone to discoloration, deformation, and allergies after wearing for a period of time, seriously affecting the brand reputation.

Difficult to form complex structures

High end watch cases have complex waterproof structures and movement slots inside. Ordinary casting machines have insufficient casting pressure, and the metal liquid cannot completely fill the complex cavity. The interior is prone to sand holes and shrinkage, which not only affects the strength of the case but also leads to improper assembly of the movement, resulting in a yield rate of less than 55%.

Poor batch consistency

Top high-end watch brands require a case size error of ≤ 0.005mm, a weight error of ≤ 0.02g, and completely consistent surface effects within the same batch. However, over 70% of small and medium-sized factories adopt a semi manual production mode, and product quality relies entirely on worker experience, resulting in significant batch to batch deviations that cannot pass brand quality control acceptance.

production environment does not meet the standards

production of high-end watches requires a cleanroom of 10000 level, but over 65% of factories do not have professional cleanrooms. During the production process, dust and impurities are prone to enter the inside of the watch case, causing the movement to jam and travel inaccurately. At the same time, they cannot meet the brand's social responsibility factory inspection requirements.

Environmental compliance not meeting standards

precision casting and polishing processes generate a large amount of metal dust and VOC waste gas. Over 60% of small and medium-sized factories lack professional environmental protection treatment equipment, resulting in unorganized emissions of dust and odors. This not only endangers the health of workers, but also leads to rectification notices issued by environmental protection departments, and even direct shutdowns, with all previous investments being wasted.

Yihui Solution Positioning and Whole Process Logic

Positioning of the solution

Specially designed for small and medium-sized high-end watch case accessory processing factories with 10-20 person teams and 100-200 square meter factories, while covering large-scale watch brand owned factories, it is the first one-stop solution in China that fully adapts to the nanometer level precision requirements of high-end watches, K gold/stainless steel/titanium alloy materials, and 10000 level clean production environment. The plan provides graded equipment configuration and production line planning based on the factory area, team size, production capacity requirements, and cooperative brand level. It does not require senior precision manufacturing technicians, high investment, or expansion of the factory area, and can complete the construction and production of the production line in 7 days. It perfectly adapts to 18K gold, 316L medical stainless steel, and titanium alloy all materials, covering the full range of watch accessories such as case, bezel, strap, and buckle. It also takes into account small batch customization, large batch stable supply, and brand explosive quick response orders, completely solving the five core problems of precision, quality, material, consistency, and environmental protection in supporting processing factories, and helping factories quickly become core suppliers of high-end watch brands.

Whole process closed-loop logic

This plan is divided into two core modules: the exclusive standardized production process for high-end watch cases and the factory implementation empowerment process, forming a complete closed loop from production line construction, mass production implementation to brand cooperation. Zero base factories can directly implement according to the process.

Cross border specialized standardized production process (adapted to platform fast response and quality control requirements)

Gradient based core equipment and supporting consumables system

This plan is tailored to the different factory areas, team sizes, production capacity requirements, and start-up budgets of high-end watch case accessory processing factories. It sets up two gradients: entry-level supporting factory configuration and standard watch supporting factory configuration. All equipment is directly supplied by Yihui's original factory, specially customized for the nanometer level precision requirements of high-end watches and the characteristics of K gold/stainless steel/titanium alloy materials, forming a complete automated production loop that matches each other. It is equipped with watch specific consumables and tools, and can be put into operation immediately without the need for scattered procurement of additional equipment. It fully meets the requirements of a 10000 level clean workshop and brand factory inspection standards.

Core positioning of two gradient configurations

Introduction to Cross border Quick Response Factory Configuration

Target audience: Start up teams of 10-15 people, small and medium-sized factories of 100-150 square meters, novice processing factories, specializing in fast response orders for mid to high end watches.

Core production capacity: daily production capacity of 100-200 pieces, monthly production capacity of 3000-6000 pieces, suitable for small batch fast response orders and stable supply.

Start up investment threshold: Lightweight and low threshold investment, perfectly matching 250000 to 450000 start-up funds.

Factory area requirement: 100-150 square meters Personnel configuration: 10-15 people

Standard watch accessory factory configuration

Target audience: Mature team of 15-20 people, 150-200 square meter factory, focusing on stable orders from top high-end watch brands, and also considering limited edition customization.

Core production capacity: Daily production capacity of 200-400 pieces, monthly production capacity of 6000-12000 pieces, suitable for large-scale stable orders and fast response to brand hot products.

Start up investment threshold: Medium investment, full cost-effectiveness, perfectly matched with 450000 to 800000 start-up funds.

Factory area requirement: 150-200 square meters Personnel configuration: 15-20 people

Core main equipment (full gradient coverage, high-end watch case exclusive customization)

14K/16K 3D printer

Gradient adaptation: full gradient adaptation                                 Corresponding to the 3D digital version/wax printing process

Core function: Nano level precision wax printing of watch case and bezel accessories, perfectly restoring complex waterproof structures and fine patterns.

Exclusive value of supporting processing factory: completely replacing traditional manual mold making, printing new case wax molds can be completed in 3 hours, and the new product sampling cycle has been shortened from 10 days to 48 hours; The printing accuracy reaches ± 0.005mm, perfectly restoring complex structures such as waterproof grooves and movement grooves of watches, solving the core pain points of precision molding in the industry, and achieving 100% consistency in wax molds.

Vacuum wax injection machine

Gradient Adaptation: Standard/Flagship Gradient Adaptation                Corresponding process step: wax mold injection step

Core function: Micro precision wax mold injection for watch case accessories, without bubbles or deformation, with a dimensional accuracy of ± 0.005mm.

Exclusive value of the supporting processing factory: one click fully automatic wax injection, precise CNC control of injection pressure and temperature, no bubbles, shrinkage, or deformation in the wax mold of the watch case; Dimensional accuracy ± 0.005mm, batch consistency 100%; The multi station design enables 24-hour uninterrupted production without the need for manual supervision, significantly reducing labor requirements.

Fully automatic vacuum powder mixer

Gradient Adaptation: Standard/Flagship Gradient Adaptation                                  Corresponding process step: gypsum molding preparation step

Core function: High precision vacuum mixing of gypsum powder, without bubbles or impurities, to enhance the density of gypsum molds.

Exclusive value of the supporting processing factory: One click fully automatic vacuum mixing, gypsum slurry without bubbles or impurities, significantly increased gypsum mold density, ensuring the precision of forming the micro structure of the watch case; The mixing parameters are precisely controlled by CNC, and the batch consistency is 100%.

High temperature rotary electric furnace

Gradient adaptation: full gradient adaptation                                  Corresponding process step: Gypsum mold roasting step

Core function: The gypsum mold of the watch case is finely temperature controlled and baked in sections, with a temperature control accuracy of ± 1 ℃, to prevent small deformations.

Exclusive value of the supporting processing factory: dual CNC segmented temperature control, customized baking curve for thin-walled and complex waterproof structures of the watch case, completely solving the problems of gypsum mold cracking and small deformation; Multi station design enables synchronous baking of batch gypsum molds, suitable for 24-hour continuous production, perfectly matching brand batch order requirements.

Platinum melting machine

Gradient adaptation: full gradient adaptation                                        Corresponding process steps: melting of K gold/stainless steel/titanium alloy

Core function: High vacuum melting of K gold/stainless steel/titanium alloy, without oxidation, impurities, and uniform material without segregation.

Exclusive value of supporting processing plants: customized for the high melting point characteristics of precious metals and special metals, matched with high-purity quartz crucibles, completely solving the problems of material carburizing and discoloration caused by graphite crucibles; Vacuum sealed melting reduces precious metal loss from 6% to within 0.2%, significantly reducing raw material costs; CNC precise temperature control, uniform melting material without segregation, ensuring stable performance of the watch case material.

Centrifugal casting machine

Gradient adaptation: full gradient adaptation                                         Corresponding process: K gold/stainless steel vacuum casting process

Core function: Special high vacuum casting for watch cases, without oxidation, sand holes, or shrinkage porosity, with a casting density of 100%.

Exclusive value of supporting processing factory: specially customized for high-end watch cases, with a vacuum degree of -0.1MPa, eliminating casting sand holes, pores, and shrinkage problems; The casting has a density of 100%, stable material properties, and perfectly adapts to the waterproof structure and strength requirements of wristwatches; One casting can accommodate dozens of watch cases, with 24-hour continuous operation and a 120% increase in production capacity compared to traditional equipment.

Centrifugal polishing machine

Gradient adaptation: full gradient adaptation                                            Corresponding process step: Polishing step on the surface of the watch case

Core function: Multi station CNC mirror polishing of watch case and bezel, nano level surface smoothness, strong batch consistency.

Exclusive value of supporting processing factory: completely replacing traditional manual polishing, fully automated assembly line operation, can complete 100 watch case polishing in 1 hour, increasing efficiency by 12 times; Polishing accuracy reaches nanometer level, surface smoothness Ra ≤ 0.02 μ m, no scratches, no sand holes, perfectly presenting high-end watch mirror effect; The polishing effect between batches is completely consistent, solving the problem of uneven manual polishing effect.

Supporting auxiliary equipment (full process closed-loop coverage, exclusive adaptation for supporting processing plants)

High pressure gypsum cleaning machine

Core function: Ultra high pressure fine cleaning of watch case accessories, removing residual gypsum from small structures without damaging the precision waterproof structure.

Exclusive adaptation value of the supporting processing factory: high-pressure non-destructive cleaning, without damaging the fine structure such as the waterproof groove of the watch case and the movement groove, the cleaning efficiency is 10 times higher than manual labor, suitable for continuous production of large batch orders, without the need for manual operation, reducing labor costs.

Programmable chiller

Core function: High precision constant temperature cooling for casting machines/melting furnaces, with temperature fluctuations of ± 0.5 ℃, stabilizing equipment operation, and improving casting size consistency.

Exclusive adaptation value for supporting processing plants: CNC precise temperature control ensures 24-hour continuous and stable operation of equipment, ensuring consistency in case size during mass production, no batch deviation, and extending equipment service life.

Ultrasonic cleaning machine

Core function: Multi slot ultrasonic cleaning of watch case accessories.

Exclusive adaptation value of the supporting processing factory: Multi groove step-by-step deep cleaning, no dead corners, no damage to the surface and precision structure of the watch case, thoroughly removing polishing residues and oil stains, improving the texture of the finished product, and adapting to continuous production of large orders.

High precision metal spectrometer

Core function: Accurate detection of alloy composition, controlling the composition of K gold/stainless steel/titanium alloy materials, in line with high-end watch material standards.

Exclusive adaptation value of DIY experience store: With a detection accuracy of 0.01%, it can quickly detect the purity and composition of K gold, stainless steel, and titanium alloy materials, ensuring that each batch of raw materials and finished products meet the brand's requirements, issuing testing reports, and improving the quality control traceability system.

vacuum cleaner

Core function: Specialized vacuum cleaning and polishing equipment for clean workshops, dust-free and impurity free, suitable for the precision processing environment requirements of high-end watch accessories.

Exclusive adaptation value of DIY experience store: fully enclosed vacuum cleaner, dust collection rate of 99.9%, no dust overflow in the workshop, fully meeting the requirements of Class 10000 clean workshop; Specially designed for precision polishing operations, it does not affect the delicate operation of workers and protects their physical health.

Exclusive consumables (K gold/stainless steel/titanium alloy casting specific, factory compatible)

Supporting tools (exclusively for high-end watch cases, fully equipped)

Practical examples of benchmark stores

Core pain points before cooperation

1. Using ordinary casting equipment, the size error of the watch case exceeds 0.06mm, the waterproof structure does not meet the standard, the waterproof qualification rate is only 52%, the brand customer complaint rate exceeds 45%, and it has been repeatedly returned and deducted by customers;

2. Traditional manual polishing results in poor surface smoothness of the watch case, scratches, and orange peel patterns, which cannot meet the quality requirements of high-end watches and have been rejected multiple times by the brand for sampling;

3. Ordinary melting furnace melting, K gold material oxidation, impurities are high, the watch case is prone to discoloration after wearing for 3 months, the material performance is unstable, and the brand reputation is damaged;

4. Complex internal structure of the watch case is difficult to form, with a defect rate of over 50% for sand holes and shrinkage, a yield rate of only 53% for finished products, and a monthly raw material loss of over 8%, resulting in high production costs;

5. Semi manual production mode, with a size deviation of over 0.12g between batches of watch cases, unable to undertake bulk orders, only able to make scattered small orders, with monthly revenue of less than 120000 yuan;

6. Without clean workshops and environmental treatment equipment, the workshop has severe dust and cannot meet the factory inspection requirements of top watch brands, missing out on high profit stable orders.

Solution Application

Adopting the entry-level configuration plan of Yihui high-end watch case processing factory, the core implementation content is as follows:

1. Core equipment: 1 nanoscale precision industrial 3D printer+case specific high vacuum precision casting machine+high vacuum medium frequency melting furnace+high-precision segmented temperature control roasting furnace+high-precision vacuum powder mixing machine+multi station CNC mirror polishing machine;

2. Auxiliary supporting equipment: ultra-high pressure fine cleaning machine, multi slot ultrasonic+drying integrated machine, high-precision constant temperature chiller, alloy composition direct reading spectrometer, equipment for 10000 level clean dust polishing workshop, dedicated exhaust gas treatment system for clean workshop;

3. Exclusive consumables and tools: a complete set of K gold/stainless steel casting consumables, precision shaping tool set for watch cases, laser welding machine, coordinate measuring instrument, batch testing tool set;

4. Supporting empowerment services: free 120 square meter factory and 10000 level clean workshop flow planning, on-site installation and debugging, 3-day one-on-one K gold/stainless steel exclusive casting process training, watch case accuracy and quality control special training, standardized quality control system construction, high-end watch brand resource docking, factory inspection guidance.

Cooperation landing results

1. The zero foundation team completed the construction of the production line and officially put it into operation in 7 days, which is 2 months ahead of the self built factory. The trial and error cost is almost zero;

2. The accuracy of the case size has been improved to ± 0.004mm, the waterproof qualification rate has reached 100%, the brand customer complaint rate has been reduced to 0.08%, and there have been no returns or deductions due to accuracy issues;

3. Nano level mirror polishing effect, with a surface smoothness of Ra ≤ 0.02 μ m, perfectly achieving a luxury grade texture. Successfully connected with three top high-end watch brands and became their core supporting supplier, with stable batch orders and monthly revenue exceeding 600000 yuan;

4. High vacuum melting technology, uniform material composition without oxidation, case wearing for 1 year without discoloration or deformation, material performance 100% stable, brand repurchase rate increased by 90%;

5. The complex internal structure of the watch case is perfectly formed, with no sand holes or shrinkage. The yield rate of finished products has increased from 53% to 99.7%, and the raw material loss has been reduced from 8% to 0.18%. The monthly savings in raw material and labor costs exceed 38000 yuan;

6. Fully automated production process, reducing the number of workers from 16 to 7, lowering labor costs by 56%, saving over 25000 yuan in labor costs per month, completely eliminating dependence on experienced technicians;

7. The delivery cycle for regular orders has been shortened from 30 days to 9 days, and the sampling cycle for new products has been shortened from 10 days to 48 hours, perfectly adapting to the fast response needs of high-end watches. The order loss rate has been reduced to 0, and the delivery capacity for popular orders has been increased by 7 times;

8. Ten thousand level clean workshop+complete set of environmental protection equipment, 100% passed environmental impact assessment acceptance and top brand factory inspection, with continuous growth in order volume;

9. Within 4.5 months of opening, all equipment investment was recovered, and within one year, the factory area expanded from 120 square meters to 200 square meters, the team expanded from 12 to 20 people, and the monthly revenue exceeded 1.5 million yuan, becoming a well-known high-end watch case processing factory in Shenzhen.

Exclusive full process training and service guarantee system for supporting processing plants

In response to the core pain points of high-end watch case accessories processing factories, such as zero foundation, lack of senior technicians, lack of understanding of luxury goods quality control requirements, and lack of industry resources, Yihui Casting has created a dedicated full cycle training and service guarantee system for supporting processing factories, accompanying the factory throughout the entire process from start-up to becoming a core supplier of top high-end watch brands, completely solving the worries of entrepreneurship.

Contact us to customize a one-stop solution for your K gold/stainless steel case accessories factory

Yihui Casting is dedicated to providing integrated one-stop turnkey solutions for K gold and stainless steel watch case accessory factories. With years of expertise in watch case accessory production, production line layout planning and cross-border industry supply chain operation, our professional team delivers customized overall solutions covering factory space design, production line deployment, professional supporting equipment allocation, precision metal forming technology, production process upgrading, professional technical training, strict quality inspection and full-cycle after-sales service. Perfectly adaptable to K gold and stainless steel raw materials, as well as various watch cases, watch bezels, watch bands and other watch accessory products. We help you build an efficient, standardized, eco-friendly and high-precision modern watch accessory production base, addressing core pain points like high processing costs, inconsistent precision standards and inefficient production schedules, ensuring stable mass production and sustained competitive growth in the global watch parts industry.

For more information about Yihui Casting Technology Co., Ltd., please visit our official website or contact our team.

website: www.yihuicasting.com      email : info@yihuicasting.com     whatsapp : +86-13802830498