Hoʻopilikia ʻia e ka maʻi ahulau, ua loaʻa i ka ʻoihana valve honua kahi hopena nui.ʻO Kina ka wahi hana nui o nā valves, ʻoi aku ka nui o ka nui o nā valves export.ʻO Zhejiang, Jiangsu a me Tianjin nā wahi nui e hana ana i ka valve ma Kina.ʻO nā valve kila ka hapa nui ...
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