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Reagent iav fwj
Ceeb Toom Lub Fwj yog iav fwj siv los khaws tshuaj lom neeg. Cov hwj no feem ntau yog ua los ntawm cov kua qaub thiab alkali resistant iav, uas tuaj yeem khaws cia cov tshuaj muaj kev nyab xeeb xws li acids, cov kev daws teeb meem, thiab cov daws teeb meem.
