Wujiang First Textile Co.,Ltd., the cupro fabric suppliers, is very strong on cupro fabric. Cupro Woven Fabric, which appeals to our environmentally-minded sensibilities. At the same time, however, cuprammonium rayon production involves large quantities of copper, ammonia, and caustic soda, all three of which can be toxic when they aren’t disposed of properly. What’s more, cupro fibers must be bathed in a variety of toxic chemicals before they harden, which exposes the environment to further harm.