6.35mm delrin ball: 1.corrosion resistance. 2. alkali resistance 3. heat insulation resistance Pingxiang City Zhongxing Chemical Packing co.ltd is a professional manufacture which produced delrin ball. 6.35mm delrin ball , POM poly formaldehyde plastic ball, PA nylon plastic ball, PP polypropylene plastic ball have good tolerance of solvent resistance, oil, acid, alkali, such as performance, high ...