... of covered spandex yarn, recently possessing one conventional covering factory and one air covering factory. All the machines we use are ... , 50d, 70d, 100d, 140d, 200d etc., is raw white and black, dyed or dope dyed, and flat or textured.The polyester we use includes ... , 75d, 100d, 150d, 200d, 300d etc., is raw white and black, dyed or dope dyed, and flat or textured.Hangzhou uniwell textile co., ltd ...