black carbon inside conductive nylon filaments 40D/6F(outer ring) interminging with black polyester DTY filaments 100D Product Description Surface resistance is 10^3~10^4 ohm. Other specification could be customized: carbon fiber Polyester or Nylon filaments Remarks 20D or 40D or 60D black(white) DTY(FDY) polyester 50D by intermingling/by twisting/by covering 20D or 40D or 60D black(white) DTY(FDY) polyester 75D by intermingling/by twisting/by covering 20D or 40D or 60D black(white) DTY(FDY) polyester 100D by intermingling/by twisting/by covering 20D or 40D or 60D black(white) DTY(FDY) polyester 150D by intermingling/by twisting/by covering 20D or 40D or 60D black(white) DTY(FDY) polyester 200D by intermingling/by twisting/by covering 20D or 40D or 60D black(white) DTY(FDY) nylon 280D by intermingling/by twisting/by covering 20D or 40D or 60D black(white) DTY(FDY) nylon 70D by intermingling/by twisting/by covering Packaging & Shipping 18 bobbins/carton, net weight 36kg/carton, gross weight: 40kg/carton, dimension: 56cm*56cm*38cm by sea, by general air transporation, by DHL/TNT/UPS/FedEX Our Services Also could produce carbon fiber 20D twist/cover with cotton yarn, such as: 1) black carbon inside conductive nylon filaments 20D twist with Ne7/1 cotton yarn, 400TPM. 2) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne12/1ply combed grey ring spun yarn by S direction only 3) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne12/1ply combed grey ring spun yarn by both S+Z direction 4) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne16/1ply combed grey ring spun yarn by S direction only 5) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne16/1ply combed grey ring spun yarn by both S+Z direction 6) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne21/1ply combed grey ring spun yarn by S direction only 7) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne21/1ply combed grey ring spun yarn by both S+Z direction E1.jpg FAQ a) Could supply free samples for trial test? Of course, free samples are 200 grams/type only. But, the freight charges is undertook by buyer.