... and chemical properties.Hardness 20 to 90 shore A or as your request.Materials Comply with ROHS, NBR, Silicone ... Color Black, transparent, green, red, yellow, grey, purple, pink or as your requested.current export market Taiwan, Europe, America, Asia ... machines, large-scale flat vacuum vulcanizing machines, rubber machines, CNC machine tools, temperature-controlled ovens and detectors. Packing PE bags ...