Hydroxypropyl Methylcellulose (HPMC) is a commonly used additive in the manufacturing of wall putty in China. HPMC is derived from cellulose, a natural polymer found in plants, and is modified by the addition of methyl and hydroxypropyl groups at different levels. The resulting polymer is soluble in water, has a high water-retention capacity, and confers characteristics that are desired in wall putty production. Wall putty is a coating applied to interior walls to create a smooth finish that prepares them for subsequent paint application. Its key function is to fill cracks, pores, and other surface defects. Wall putty also promotes proper adhesion of paint and can extend the life of painted surfaces. HPMC is an important ingredient in wall putty because of its ability to thicken, bind, and regulate workability. It has a unique rheological behavior, which helps to increase the viscosity of the mixture while maintaining the right level of consistency. The high water-retention capacity of HPMC ensures that the mix remains moist during application, promoting a longer working time, and reducing the occurrence of cracks and shrinkage. HPMC also enhances the adhesive properties of wall putty, allowing it to adhere well to different substrates, such as plasterboard, concrete, and masonry. Additionally, it imparts excellent sag resistance, improved pumpability, and increased durability to wall putty. These properties make HPMC ideal for use in the production of high-quality wall putty in China. In addition to its extensive use in wall putty manufacturing, HPMC is also utilized in other industries, such as construction, personal care products, food, and pharmaceuticals. Due to its excellent water-solubility, thickening capabilities, and non-ionic nature, it is ideal for various formulations that require stability, consistency, and binding properties. Overall, the widespread use of HPMC in the production of wall putty in China is a testament to its effectiveness as an additive. Its ability to improve the quality, durability, and workability of wall putty is highly valued by manufacturers and end-users alike. With the continued growth of the construction industry, HPMC for wall putty will remain in high demand, as it contributes to the creation of high-quality and long-lasting painted surfaces.