20430090-1503475093024392-7775025312075759618-n                                                                                                                               27072837-1690561687649064-7715346252868245111-n 27067244-1690561690982397-8127884708449853650-n vietnam-flag
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   image-c-HJv-ZHVjd-A-product162996035696640100     image-c-HJv-ZHVjd-A-product162996035859964200      

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      dia0     dia1







         impeller



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           rl2               rl1