Manuia
Tianjin Shuangjin Pumps & Machinery Co., Ltd. na faavaeina i le 1981, o loʻo tu i Tianjin o Saina, O se tagata gaosi tomai faʻapitoa ma le fua tele, sili ona atoatoa ituaiga ma sili atu le malosi R & D, gaosiga ma asiasiga gafatia i pamu pisinisi a Saina.
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