ゴム紐の事で困り事等がある場合は、何でも気軽に質問・ご相談ください。 Single covered yarn involves wrapping only one layer of masking yarn close to a core yarn, ordinarily spandex. This method leads to a yarn that offers reasonable elasticity and power, rendering it appropriate for a variety of apps. 弾性糸に、下糸（左側）が巻かれ、その上にさらに上糸（右側）が巻かれているのが分かります... https://khalile541xnz1.smblogsites.com/profile