100% polyester yarn for sewing thread 1.Raw materials 2.High tenacity ,high strengh,bright,evenness,no knots... 100% polyester ... :Raw white2.Material : Raw Material (100% polyester yarn) 3.Polyeste r staple fiber 1.3D*38MM4. Main Technical index: Twist per ... e-longation, brighter ,evenness.6.Model Number :20s/2,30s/2,40s/2,50s/2,60s/2,20s/3,30s/3,40s/3,50s/3 ...