Precision Casting in Small and Medium sized Jewelry Processing Plants: Three Key Links to Stabilize Casting QualityCompetition in the jewelry industry is becoming increasingly fierce, and brand customers' demands for jewelry details and batch consistency continue to rise. For small and medium-sized jewelry processing factories, the most troublesome problem is often that with the same formula and the same master, one batch of castings may be smooth and complete, but the next batch may have sand holes, shrinkage,···...