... , 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 and 1,500 tons of nylon filament POY annually ... , 1,500 tons of twisting silk, 3,000 tons of nylon lines and 5,000 tons of polyester high-strength yarns ...