... 1,Maleic Anhydride 2,60,000mt/year 3,Packing: 22MTS/20' FCL or 24mt/20' FCL 4,Maleic Anhydride /108-31-6 5 ... ,purity:99.5% ITEM: ... 52.452.53Ash%≤0.0030.002Iron PPM ≤51.2 1,productsTangshan Baotie Coal & Chemical Co., Ltd. (Baotie ... products. We built a maleic anhydride plant in2006, a water reducer plant in 2007, and a dinaphthol plant in ...