Lub tsheb iav dej, uas zoo li pheej yig thiab yooj yim rau kev khiav lag luam, kuj tseem yuav ua rau muaj qhov tshwm sim loj heev yog tias siv tsis raug. Cov khoom tseem ceeb ntawm cov iav dej yog dej, ethylene glycol lossis cawv, isopropanol, surfactants, thiab lwm yam, thiab ntau yam dej iav hauv khw feem ntau yog b ...
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