（1）. Special multi-line, also known as high-strength polyester thread, silk light. Is one of the market's most regular, the most widely used varieties of sewing thread.
（2）. Uses: For PVC, thicker fabrics. Mattresses, sofas, leather goods
（3）. Features: shiny, inelastic, colored solid, cheap
（4）. Size: 0 #, 5 #, 10 #, 20 #, 30 #, 40 #, 60 #, 80 #