www.毛片,丁香八月婷婷,免费一级a毛片,国产91jk在线网站,久久精品国产99精品国产亚洲性色,www.三级A成人免费网站入口在线,18以下操屄视频无码免费

Your Current Position:  PRODUCTS > Gum Rosin series > Light-Colored Rosin

Light-Colored Rosin

Light colored rosin is made by refining Rosin under certain temperature and vacuum conditions; It is used in electronic flux, light rosin resin and edible ester gum.