منتجات
عرض المزيد :
Unsaturated Polyester Resin
الاقسام : UPR (Unsaturated Polyester Resin)
Unsaturated polyester resin is a condensation polymer formed by the reaction of polyols and saturated/unsaturated dibasic acids at 190-220℃ until the expected acid value or viscosity is met. After ...