1.One of the largest manufacturer in China 2.High quality and low price 3.Brand: BS Chemical 4.ISO 9001: ... , indole, α-Anaphthalene, β-methyltea, biphenyl, dimethyl tea, acenaphthene, fluorene and fluorene oxygen and other valuable organic chemical raw materials.Characters: Brown oily ... production of quinoline, indole, dispersants, water reducing agent. Chemical oil and gas: high purity wash oil