Chitoliro chachitsulo chozungulira chimafunikira chithandizo chakunja kuti chiwonjezere kukhazikika: 1. Pamwamba pa chubu cha anticorrosive spiral amatsukidwa ndi zosungunulira ndi emulsions, zomwe zimatha kuchotsa zinthu zakuthupi pamtunda wa chubu, koma sizingachotse dzimbiri, sikelo ya oxide, kuwotcherera flux, etc., kotero kuyeretsa ...
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