Non-rusting 304 stainless steel beads, chromium and nickel elements are combined to form an anti-oxidation layer on the surface of the material. Sun and rain can be used for many years, quality assurance.
Hardness HRC≤26, corrosion resistance, nickel and bright elements combined with acid and alkali resistance, corrosion resistance
Concentricity tolerance reaches ±0.002mm, no pollution, no release of toxic substances, non-toxic and pollution-free environment
Food grade 304 stainless steel ball, high quality, silver white luster, 10 years and 20 years as new, fine workmanship
Accurate hydraulic pressure, stable structure, polished, no burrs, tough and round, high-quality and beautiful!