Hydroxyethylcellulose (HEC) ndi polima wosungunuka m'madzi womwe umagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana kuphatikiza zomangamanga, chakudya, mankhwala ndi zinthu zosamalira anthu. Ndi chinthu chachilengedwe, chosawonongeka chochokera ku cellulose, chakudya chomwe chimapezeka m'makoma a cellulose. Mu zokutira mwala zachilengedwe, H...
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