... steel via cold-rolled, it applys to pack wood, paper, glass, stone, textile, pallet, box and so on ... 50±1kg, Inner is protect humidity-proof waw paper, Medium is plastic film, Outer is sackcloth or ... compound paper packing, coils to be laid on double ... is 45±1kg, Inner is protect humidity-proof wax paper, Medium is plastic film, Outer is sackcloth or ...