... order before mass production. 1. Materials advice: silicone and rubber (EPDM, also NBR, SBR, CR, NR, etc),as ... your particular application.2. Application: automotive, machinery, bathroom facilities,medical, household electrical appliances etc.3. Certifications: All manufacturing processes ... Color: black, transparent,red, blue,any in PMS,Especially for the silicone products.7 .Hardness: 30 to 90 shore ...