Odziwika bwino opanga ma valve a pakhomo: mphamvu ya zomangamanga
Ndi kuwonjezereka kwa ndondomeko ya mafakitale, mafakitale a valve mu chitukuko cha chuma cha China akukhala ofunikira kwambiri, pakati pawo, valve yachipata monga nthambi yofunikira ya mafakitale a valve, ntchito yake mu mphamvu, petrochemical, madzi ...
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