For the rubber , the brands are Kumho, LG, Zeon, ENI, Sinopec(Qilu)Zhechen, Iran , Synthos, Goodyear, Lion, Jsr , all the russia factory, and Nainit, the grades are SBR 1502, 1500, 1712 , 1705, 1778 , 1723, 1783, SKD-ND KBR01 BR1208 PBR1220 NBR 35L 35LM 6240 6250, CR IR2200, BK 1675N IR2200...