Metallic yarn'sspecification TypeIngredientPaper tube specificationLength/kg S1/69"12μ 33% metallic yarn& 67% 150D/120D/ 75Dterylene/viscose/Nyquist criterionlength: 17.7cm diameter: 5cmsliver 42800m±3%(210D) gold & multicolor41300m±3%(218D)Technical support Metallic yarn belongs to special silk line and itis different from general textile fibre. CPP which does not resist acid and alkali because of limitation for chemical ingredient and performances. According to different types and different technical parameters of products, we have professional technical support to provide you how to deal with parameter. Please contact us. We have strict management from purchasing material to finishing theproducts' packing.