E Fa'afefea ona Filifili ma Fa'aoga Sa'o Valves Fa'apena ole Wafer Centerline
Fa'afefea ona Filifili ma Fa'aoga Sa'o Valves Butterfly Butterfly Wafer Chinese Wafer Centerline O le valve butterfly i Saina o se ituaiga masani o valve, fa'aaoga lautele i alamanuia e pei o le suauu, vaila'au, metallurgy, ma le malosi. Ae ui i lea, ona o le faʻapitoa o lona fausaga a ...
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