... next to the Bohai Sea, close to Tianjin Airport and Tianjin Port, and surrounded by Beijing-Shanghai Railway, Beijing-Kowloog Railway, ... of dyes intermediates, the company boasts top R & D capability in the control of isomers and purification of products. We now have ... 2,5-disulfonic acid, Metanilic acid, Diethyl Meta Amino Phenol, 3-aminophenol and thermal-press sensitive dyes,are exported to Europe ...