亚洲欧美久久久久,日韩国产在线观看,狠狠草视频,97久久久国产精品,av老司机宅男电影院,国产精品任我爽爆在线播放,小h片免费观看久久久久

Your Current Position:  PRODUCTS > Resin series > Pentaerythritol Ester > Penta Ester of Rosin

Pentaerythritol Ester of Gum Rosin

Pentaerythritol ester of modified gum rosin are made from gum rosin,; Used in hot melt adhesives and rubber industry.