Tsis yog tus qauv
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Tsheb Tsheb Generator tsis-txheem bearings
Peb lub tuam txhab tuaj yeem raws li cov neeg siv khoom cov neeg siv khoom tshwj xeeb, thiab tsim tsim tsim, tuaj yeem muab cov khoom siv metric loj thiab cov khoom tsis muaj qauv.
