... yarn, 20s/2,40s/2,42s/2,44s/2,50s/2,60s/3. RT and TFO, hight strengh,without knot bright ... which produce the 100% polyester sewing thread yarn in Liaoning province (HAICHENG CITY FEIHU TEXTILE ... products are hight strength, eveness, without knot , bright, less broken ends, low-elongation, well sewing function ... , we use the polyester staple bright vigin fiber (YIZHENG fiber). we are very ...