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polyester sewing upholstery thread1.Product IntroductionPolyester sewing upholstery thread is made from industrial filament material.Our polyester sewing upholstery thread is very powerful and flexible to adapt all kinds of harsh environments and meet the needs of the market. We provide you a variety of colors polyester sewing thread,Website:http://www.wr-thread.com,and it is knotless.To reduce friction and gives more power to the high-speed sewing machine,this kind of sewing thread contains