... in our company, which produce nylon filament yarns, polyester yarn (semi-dull/bright,dope dyed) nylon filament POY and ... high strength polyester filaments, with capacity of 5,000 tons of nylon filament yarns ... also produce nylon DTY, twisting yarns and fight wires, with an annual capacity of 2,000 tons of DTY, 1 ... the production and R&D around the year. Polyester twist yarn