Gearbobx he Wafer Butterfly Valve
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Gearbobx he Wafer butterfly valve
Tam deuh relWafer butterfly valve cu worm gear box he. Mah rungrul cu ductile thir QT500-7 in sermi a si i, rungrul hri cu a ttha tukmi thil tuahnak he fonh in, a rawk kho lomi le a sangmi kuat khawhnak sining a ngei.
