... We can send it from Musel,Laocai and etc. Rubber antioxidant RD(TMQ)Chemical Name: polymerized 2,2,4trimetyl 1,2dihydroguinoline ... same time, it may adjust the consumption quantity of antioxidant RB according to different strictly requirements of hot oxygen aging ... resistance.Better results can be achieved by using with antioxidant MB. Precaution:Dont contact directly to skin and avoid moisture ...