... of Maleic anhydride, Betanaphthol, J acid, NSF, Coal Tar Pitch, Benzene, Anthrancene oil, It is one of ... Tangshan. Baotie achieved the leading company in coal chemical filed in three years and will be ... year 2005 for the manufacture of derivatives from coal tar.Tangshan Xingbao Building Maerials Co., Ltd was ... located for access to the raw material (coal and steel), Large ports (Tanggu port is ...