... Joint, limit expansion joints etc.Registered trademark "Changmao" brand, selling products throughout 31 provinces, municipalities and autonomous regions, was used ... centigrade over the medium or oil, strong alkali acid concentration, solid-state materials. Material: NO.NAMEMaterial1Inner and outer rubberNR,EPDM, ... 0033012232902040303025010200400122535520403030300122004Best Selling Rubber Joint