五月丁香激情爱爱激情久久,国产欧美在线视频播放,五月激情综合丁香色婷婷,免费看黄色网站日韩,亚洲v天堂v国产v无码片,在线观看精品无码小视频,天天爽夜夜爽人人爽,qc

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.