Thickness: (20D carbon fiber  wrap Ne16/1 polyester fiber spun yarn by S+Z direction)*2plies

Other specifications could be customized:

 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

 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 cotton grey yarn by S direction only

3) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne12/1ply combed cotton grey yarn by both S+Z direction

4) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne16/1ply combed cotton grey yarn by S direction only

5) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne16/1ply combed cotton grey yarn by both S+Z direction

6) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne21/1ply combed cotton grey yarn by S direction only

7) Use black 20D/3F carbon inside nylon outer ring to cover/wrap Ne21/1ply combed cotton grey yarn by both S+Z direction

 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.