1.Kupanga makandulo Chopangira makandulo ndi sera ya parafini.Sera ya parafini ndi chisakanizo cha alkanes angapo apamwamba, makamaka n-doxane ndi n-doxoctane, yomwe ili pafupifupi 85% ya carbon ndi 14% haidrojeni.Zida zothandizira zomwe zawonjezeredwa ndi mafuta oyera, stearic acid, polyethylene, essence, etc., pakati ...
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