Sezvo isiri-ionic surfactant, hydroxyethyl cellulose (HEC) ine zvinhu zvinotevera mukuwedzera kune thickening, kumisa, kusunga, flotation, film-forming, kuparadzira, kuchengetedza mvura uye kupa macolloid ekudzivirira: 1. HEC inonyunguduka mumvura inopisa kana inotonhora. , uye haina kunaya panguva yakakwirira...
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