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For HPMC, the specific HS code might vary depending on factors like the country of origin, product grade, and intended use For HPMC, the specific HS code might vary depending on factors like the country of origin, product grade, and intended usehydroxypropyl methyl cellulose hs code. However, a general HS code for HPMC could be 39123900, which falls under the chapter Cellulosic esters; their halogenated, sulphonated, nitrated or nitrosated derivatives.
One of the main challenges is the shortage of raw materials, such as cotton linter and wood pulp One of the main challenges is the shortage of raw materials, such as cotton linter and wood pulphpmc china. This has led to increased prices and supply chain disruptions, which have affected the profitability of HPMC manufacturers. Another challenge is the environmental regulations in China, which have become more stringent in recent years. HPMC manufacturers must comply with these regulations, which can be costly and time-consuming.
Medium-viscosity grades (3000-6500 cP) find use in sustained-release matrices, while high-viscosity grades (over 10,000 cP) are employed for thickening and stabilizing suspensions Medium-viscosity grades (3000-6500 cP) find use in sustained-release matrices, while high-viscosity grades (over 10,000 cP) are employed for thickening and stabilizing suspensionshpmc types.