Mapiritsi a mpweya wa granite amagwiritsidwa ntchito kwambiri m'makampani oyika bwino chifukwa cha kuchepa kwa mpweya wawo, kusasunthika kwakukulu, komanso kulondola kwambiri.Komabe, ngati mpweya wonyamula mpweya wawonongeka, ukhoza kusokoneza kwambiri kulondola kwake ndi ntchito yake.Chifukwa chake, ndikofunikira kuyang'anira ...
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