... , mineral acid, alkalis, bleaches, and other oxidizing agent. Method of making: Polyester yarn is made from japanese 7.5 high ... fastness, Chemical resistance, Abrasion resistance in our experiment.Packing of our product:125g,380g,450g,1350y,4000y, 5400y each ... , forming, export and distribution, with our specialized production of sewing threads and embroidery threads. Our production output reaches 5 ...