... kinds of Rubber Antioxidants:RD(TMQ),4010NA,4020,BLE,A,D.. also zinc bin,.Colophony.etc.we have our own factory ... )).etc.Owing to the professional technology and integrated quality control system, we obtains a steady market in Europe, Australia and America ... meet most of demands in these products by strong R&D power, , OEM orders also are available.If you have any requirements ...