... yarn raw white Z &S excellent quality and competitive price nylon covered spandex yarn:Hangzhou uniwell textile co., ltd. is the ... we use includes 20d,30d,40d,70d,140d etc.the nylon we use includes 20d,30d,40d,50d,70d,100d,140d ... is broadly used for socks, sweater, seamless, denim, woven fabric, knitting fabric, large circular knitting machines and small circular knitting machines and ...