Pakalipano, mothandizidwa ndi mfundo zoletsa mphamvu ku Guangxi ndi Yunnan, kutsika kwa mtsinje kwachepetsedwa.Komabe, chifukwa chakuchulukirachulukira kwamafuta amafuta m'nyumba ndi mafakitale oyenga komanso kuchepa kwa malonda ogulitsa kunja, kutumizidwa kwa petroleum coke ndikochepera ...
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