... it is our mainly dealing product,so we can supply with best price and good quickly! specificationItemExtra GradeMeasured ValueApperancelight ... and sale of Maleic anhydride, Betanaphthol, J acid, NSF, Coal Tar Pitch, Benzene, Anthrancene oil, It is one of key 100 cultivation ... the year 2005 for the manufacture of derivatives from coal tar.Tangshan Xingbao Building Maerials Co., Ltd was established in ...