(この画像の場合は、芯ゴムは、天然ゴム糸で、カバード糸は、上糸も下糸もポリエステル糸の生成色です。) Solitary covered yarn includes wrapping an individual layer of covering yarn around a Main yarn, commonly spandex. This method leads to a yarn that offers average elasticity and energy, which makes it ideal for a number of purposes. お急ぎの場合や、とにかく質問したい、聞いてみたいとい... https://johnu740cdc8.humor-blog.com/profile