Yarn Grading: I usually consult with grading technical specs, which involve the diameter and uniformity of yarn strands. A constant diameter delivers improved overall look and effectiveness of fabrics. Elasticity，durability，breathability，versatility，shape retention，superior dyeability，lightweight Still, Then again, warmth retention and comfort in cold-temperature textiles might ... https://brookslzlwg.blogdemls.com/31561287/the-basic-principles-of-covered-spandex-yarn