Introduction to Hydroxypropyl Methyl Cellulose (HPMC): HPMC is widely used in various industries such as construction materials, coatings, synthetic resins, ceramics, pharmaceuticals, food, textiles, agriculture, cosmetics, and tobacco. It is categorized into construction-grade, food-grade, and pharmaceutical-grade. Currently, the majority of domestically produced HPMC is of construction-grade, with a significant portion used in putty powder (approximately 90%) …

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