... materials 1.2D x 38mm staple fiber, for polyester sewing thread, which is imported from Thailand, Indonesia ... 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, ... materials 1.2D x 38mm staple fiber, for polyester sewing thread, which is imported from Thailand, ...