elastic yarn single covered yarn raw white S&Z excellent quality elastic yarn: Hangzhou uniwell textile co., ltd. is the professional producer of covered spandex yarn, ... , 140d, 200d etc., is raw white and black, dyed or dope dyed, and flat or textured.The polyester we use includes ... 150d, 200d, 300d etc., is raw white and black, dyed or dope dyed, and flat or textured.Hangzhou uniwell textile co., ltd ...