Cellulose ether is mainly used to retain water and increase smoothness. It can solve the doubts about drum cracking and initial strength during the construction process. Cellulose ether mainly plays the role of water retention, adhesion and smoothing. Together, they enhance the adhesion of the putty and reduce the sagging phenomenon during the construction process. Ether can be used as a film-forming agent, emulsifier and stabilizer to make it have good abrasion resistance, uniform coating performance and improved surface tension. High water retention function makes it have excellent brushing and leveling properties. The interface agent is mainly used as a thickener, which can improve the tensile strength and shear strength, improve the surface coating, and enhance the adhesion and bonding strength. External wall thermal insulation mortar The cellulose ether in this article focuses on bonding and increasing strength, making the mortar easier to apply and improving work efficiency. Higher water retention function can prolong the use time of mortar, improve shortening resistance and crack resistance, improve surface quality and increase bonding strength. The product has smoothness, water retention and strength. Suture agent The increase of cellulose ether makes it have excellent edge adhesion and prevents the influence of soaking on all construction. The stable adhesion of self-leveling cellulose ether ensures excellent fluidity and self-leveling ability, and the operating water retention rate enables it to set quickly. 9. The high water retention of the construction mortar plaster mortar makes the cement fully hydrated and significantly increases the viscosity Knot strength.