Direct manufacturers, factory located in rich origin of raw materials, product quality assurance, the price is more substantia Gum RosinWW Gradeused for making soap, paper, paint, and rubber . ParameterGradeStandard: GB/T8145-8146-2003XWWWGAPPEARANCETransparentTransparentTransparentCOLORLight YellowPale YellowYellowSOFTENING POINT(R&B)°C76.076.075.0ACID NUMBER(mg KOH / g)≥166.0166.0165. ...