1. Dab tsi yog daim ntawv thov tseem ceeb ntawm hydroxypropyl methylcellulose (HPMC)? —— Lus Teb: HPMC yog dav siv nyob rau hauv cov ntaub ntawv siv, txheej, hluavtaws resins, ceramics, tshuaj, khoom noj khoom haus, textiles, ua liaj ua teb, tshuaj pleev ib ce, luam yeeb thiab lwm yam lag luam. HPMC tuaj yeem muab faib ua: qib kev tsim kho, foo ...
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