6640( NMN), have two kinds of paper, one is domestic paper, other imported from other country, adapted to the grade F insulated.
6650( NHN)have two kinds of paper, one is domestic paper, other imported from other country, adapted to the grade H insulated.
These two kinds of product are suitable for ship, machine, is the best insulation material.
The product surface clean, flat, without bulb, no fleaking, no crape, ordered.
size: product in roll, width not less than 300mm, weight about 20kg, not allowed much more than 3 pieces, the length of every pieces not less than 10m.