MC,HPMC,HEMC are non-ionic cellulose ethers produced from natural high molecular cellulose through series of chemical changes.They are characterized by the solubility in water, water retention,non-ionic type, stable PH value ,surface activity, reversibility from gelling to solving at different temperature, thickening , binding, film-forming, lubricating and mold resistance. Due to all these special properties, they are widely applied for thickening,gelling, emulsifying, dispersing,stabilizing,water retaining and mixing improving in industries like building material , painting , synthetic resin, porcelain, medicine, food, textile,agriculture, cosmetics and tobacco.