In addition to their strength and corrosion resistance, fiberglass sewer pipes also offer excellent flexibility and ease of installation





Answer: The powder loss of putty powder is mainly related to the quality of hydrated lime (calcium hydroxide) and has little to do with HPMC. A low calcium content in hydrated lime and an inappropriate ratio of CaO to Ca(OH)2 can both cause powder loss. If there is some relation to HPMC, it would be that poor water retention of HPMC can also cause powder loss. For specific reasons, please refer to question 9.
7. Hydroxypropyl Methylcellulose has better enzyme resistance than MC, and the possibility of enzymatic degradation of Hydroxypropyl Methylcellulose is less than that of MC.
hpmc complies with the standards for pharmaceutical products and is manufactured according to the relevant GMP guidelines in a fully controlled clean room environment.
Answer: HPMC cold water instant type is after glyoxal surface treatment, in cold water quickly dispersed, but not the real dissolution, viscosity is dissolved. The hot soluble type has not been surface treated with glyoxal. The amount of glyoxal is large, the dispersion is fast, but the viscosity is slow, the amount is small, the opposite.

hydroxyethyl cellulose solubility. HEC is soluble in both cold and hot water, with solubility increasing as the temperature of the solution increases. However, care must be taken not to exceed the maximum temperature at which HEC can dissolve, as excessive heat can cause the polymer to degrade and lose its effectiveness.


A laxative effect may only occur if very high quantities are ingested.

hpmc manufacturers in china. Henan Botai Chemical Building Materials Co., Ltd. is committed to research and development, and continuously invests in improving its production processes to enhance product quality.