Q.R 304 Stainless Steel Ball 0.5mm

- Sep 21, 2019-

Our company has broken through the precision microsphere technology, and successfully developed the stainless steel 304 0.5mm roundness within 0.002 mm precision ball. Can undertake the diameter of 0.1 mm various materials high precision steel ball orders! Welcome customers to consult.不锈钢球 304 0.5mm