Hydroxypropyl Methyl Cellulose (HPMC) is a non-toxic, odorless, white flocculent powder with stable performance and easy solubility in water. Its aqueous solution is a neutral or alkaline transparent viscous liquid, soluble in other water-soluble gums and resins, and insoluble. In organic solvents such as ethanol. Hydroxypropyl Methyl Cellulose (HPMC) can be used as a binder, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, etc. Hydroxypropyl Methyl Cellulose (HPMC) can form high viscosity colloids, solutions, adhesion, thickening, flow, emulsifying dispersion, shaping, water retention, protective colloids, film molding, acid resistance, salt resistance, suspension and other characteristics, and is physiologically harmless Therefore, it has been widely used in the production of food, medicine, daily chemical, petroleum, paper, textile, construction and other fields.