中文字幕av无码av高潮,日韩制服一区二区三区,亚洲综合精品香蕉久久网,国产亚洲一级看黄无码,欧美激情一级人爱视频,高清无码黄片在线看,一面亲上边一面膜下边的免费,亚洲一级中文字幕,强睡邻居人妻中文字幕

Your Current Position:  PRODUCTS > Modified rosin series > Fumaric Rosin

Fumaric Resin Derivative

Used widely in paper-making, inks, paints, adhesives etc., major used as the fortified sizing agent for paper-making. Besides according to customer's requirement, we can manufacture modified rosin from Disproportionated Rosin, Ployer Rosin.