Tus nqi qis hec hydroxyethyl cellulose Hydroxyethyl cellulose (HEC) yog cov khoom siv hluav taws xob ntau yam siv dav hauv ntau lub lag luam, suav nrog txheej txheej, nplaum, cov khoom tu tus kheej, thiab tshuaj. Raws li kev thov rau HEC loj hlob hauv cov kev lag luam no, cov tuam ntxhab tab tom nrhiav txoj hauv kev los muab qis-pr ...
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