... %-20% 2.good core evenness,natural touch,etc 3.used for high class apparel,etc. From china factory, our 100% poly poly core ... ,30s/2,30s/3,40s/2,45s/2,50s/2,etc. Main Specifications and Usages NeSpecificationsUsages20s/23000Y,5000MJeans, shoes, caps, leather ... ,10000YSuits, trousers, coats, Sewing of button-hole and button-sew, etc.45s/25000YSuits, trousers, coats, Sewing of button-hole and button ...