1.synthetic rubber BK1675N 2.butyl rubber BK1675N 3.BK1675N For the rubber ,we can supply Korea ,Russia ,Japan, America ,Poland, Iran ,Serbia ... ,SKI-3S ,BK 1675N, SBS 792 791H 815. Butyl rubber BK1675, one of synthetic rubber.The aromatic oil used is an efficient plasticizer ... for high molecular We can offer Butyl rubber Russian /China /lanxess BK-1675N,IIR-1751.301 If you ...