... order before mass production. 1. Materials advice: silicone and rubber (EPDM, also NBR, SBR, CR, NR, etc),as your request , Environmental Friendly ... samples. Mold/samples lead-time: For trial order mold, usually in 7days For mass production mold, usually in1- 2 weeks6. Color ... : black, transparent,red, blue,any in PMS,Especially for the silicone products.7 .Hardness: 30 to ...