... , nylon filament POY and high strength polyester filaments, with output of 5,000 tons nylon filament yarns and 1,500 tons ... DTY, twisting yarns and fight wires, with an annual output of 2,000 tons DTY, 1,500 tons twisting silks, 3 ... is strong in technology. We retain a number of senior engineers from Shanghai Institute of Synthetic Fiber, who are responsible for the production ...