We are the authorized supplier for Katun USA on web roller for the model No. Canon NP3050, Canon NP6060 copier. We choose aromatic polyamide which is made from Dupont USA and Japan to produce Web roller. The thickness can maintain 0.0025mm without changing yellow. The tenacity of our Web roller is very good without a pull and break. It can endure the high temperature of 380 centigrade.