国产新型光稳定剂gw 94 4z是具有高效、多功能的高分子材料助剂。

Home made GW 944z is a new style additive in polymers with high and excellent multifunction.

youdao

国产新型光稳定剂gw 94 4z是具有高效、多功能的高分子材料助剂。

Home made GW 944z is a new style additive in polymers with high and excellent multifunction.

youdao