the advantage of the Nyln Sewing Thread is its Elastic, Low Shrinkage, High Temperature Resistant, Eco-Friendly Nylon Thread 1) with CE and Rohs 2) color can be customerized Nylon Thread Component: Polyamide 6 synthetic fibre, popular name Nylon 6 synthetic fibre. lSpecification: 210D/2,210D/3,280D/3,210D/4,420D/3,630D/3,840D/3,1050D/3,1260D/3. lCharacteristic: The advantage of polyamide 6 is its ...