polyester ,pp sewing thread 0.4--5mm10s/3,20s/3,20s/6,20s/9 , ... ,420D/3,630D/3 polyester pp sewing bag thread pp split sewing bag thread 0.3mm---8mm 100% polyester thread:7s/10,7s/15,10s ... so on, 65%polyester+35%cotton high tenacity polyester nylon thread ,binded thread,when it has be cut ,it can not be ...