... which produce the biggest factory which produce the 100% polyester sewing thread yarn in Liaoning province (HAICHENG CITY FEIHU TEXTILE CO ... pieces, each day we produce about 40 ton 100% polyester sewing thread yarn. we have the yarn 20s/2, 40s/2 ... two for one ), raw white and optical white. our products are hight strength, eveness, without knot , bright, less broken ends, low-elongation, well sewing ...