欧美黄网站|新奥特曼电影在线观看免费完整版|色999韩|北条麻妃中出,奇米777在线视频,国产一级欧美,亚州久久

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

Pentaerythritol Ester of Polymerized Rosin

Pentaerythritol ester of polymerized rosin are made from polymerized rosin through esterification with pentaerythritol;have the character of large molecular weight, high softening point, used for adhesives tapes to enhance the holding power and cohesive force.