introduce Dry-mix mortar ndi chisakanizo cha simenti, mchenga, ndi zina zomwe zimagwiritsidwa ntchito kumata matailosi, kudzaza mipata, ndi malo osalala. Kuphatikiza koyenera kwa zosakaniza ndikofunikira kuti mupange matope ochita bwino kwambiri okhala ndi mgwirizano wabwino kwambiri, mphamvu ndi kulimba. Choncho opanga amagwiritsa ntchito hydroxypropy...
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