CMC is a good finishing agent, thickener and sizing agent. CMC can be applied on the gauze, in the process of weaving the protection of the role, to retain a good elasticity, improve the smooth muscle. CMC as a sizing agent is because of its film forming in the cotton yarn to form protective film, effectively prevent mildew and insect bites. At the same time, CMC can be used as printing material for dyeing industry and it can improve the force of hydrophilic and osmosis of dye material, making the dyeing uniform and less chromatism