1. By silica material, non-toxic products, no peculiar smell 2.The product is environmental protection product SpecificationsA.Certificate:ISO 9001:2000 B.Material:NR,SI,EPDM,NBR,PU,etc C.customer's design is welcome D.Any sizes and colors1.Product/Service(We Sell): O-rings,U-type loops,Y-type loops,customized rubber items 2.Material : NR, SI, EPDM, NBR, SBR, FPM, IR,, BR, IIR, PU, etc, just as ...