1.Purity:99.5% 2.China direct supplier 3.BV,SGS,CIQ,COA,MSDS,ISO 4.bitumen,asphalt 5.for binder, ... anode as Aluminium indust larger Manufacturer bitumen asphalt 70 1001.Purity:99.5%2.China direct supplier ... polycyclic aromatic hydrocarbons, less alkyl aromatics content,there are mainly 1 - methylnaphthalene, 2 - methylnaphthalene, acenaphthylene, Cong, oxygen Cong, anthracene, quinoline ...