Kuzindikira Ubwino Wamagetsi a Guanshan's brass pressure GaugesM'dziko loyezera ndi kuwongolera mafakitale, zoyezera zamphamvu zamkuwa zimagwira ntchito yofunika kwambiri pakuwonetsetsa kuti ndizolondola komanso zodalirika. Guanshan, wopanga wotchuka komanso wogulitsa, amapereka zambiri ...
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