Guangzhou Water Supply Co. (GWSC), yomwe idakhazikitsidwa mu Okutobala 1905, ndi bizinesi yayikulu yaboma yopereka madzi. Amapereka ntchito zophatikizika, kuphatikiza kuyeretsa madzi, kupereka, ndi chitukuko chamakampani osiyanasiyana. Ponseponse, GWSC imatsatira mfundo ya "kumanga dala mzinda, dala ...
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