... , Indonesia, and Korea. It is the best raw material for 100% spun polyester sewing threads (20S, 30S, 40S, 50S, 60S, 80S) with ... various lengths and strands.100% spun polyester sewing thread (20S, 30S, 40S, 50S, 60S, 80S) with ... , Indonesia, and Korea. It is the best raw material for 100% spun polyester sewing threads (20S, 30S, 40S, 50S, 60S, 80S) with ...