/xiangjiaorumen/jichuzhishi/2009 032 1/hechengxiangjiaodefenlei _ 64 . html
Styrene butadiene rubber SBR (brand number1500/1502/1712/172/1723/...).
Butadiene rubber BR ...
Isoprene rubber IR ...
EPM/ EPDM ...
Butyl rubber IIR
halogenated butyl rubber ...
Neoprene CR ...
silicon rubber ...
viton ...
etc ...