... -2 2.China larger supplier 3.BV,SGS,CIQ,ISO,COA,MSDS 4.Supply Free sample 1.High puirty of Medium ... :8007-45-22.China larger supplier3.BV,SGS,CIQ,ISO,COA,MSDS4.Supply Free sample5.Appreance:black liquid 2.DescriptionCoal tar ... coal tar deep processing technique and equipment, Baoshun Chemical could extract medium-temperature pitch, modified pitch, industrial naphthalin (solid and liquid ...