... additive of plastics, etc. It is main material of binary acid with four carbons, 1,4-butanediol r-butyrolactone, tetrahydrofuranPacking: ... dedicated to the production and sale of maleic anhydride, beta naphthol, bon acid. 2,locationOur company is located in Tangshan which ... international competitive edge, Baotie expanded the production of maleic anhydride to 60,000 tonne/y.. Maleic anhydride 99.5%MIN