... produces a variety of pure aramid yarn, including single yarn (5S, 10S, 20S, 25S, 30S, 35S, 40S, etc.), double-stranded wire (10/2 ... 20/2 30/2, 40 / 2, etc.), three strands of sewing thread (10/3 20 ... yarn can be used as the warp and weft yarns of aramid fabric, protective clothing, high temperature filter felt fabric sewing ...