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Okay Energy Equipment Co., Ltd.
Wuxi Srowav Machinery Co.,Ltd
Hangzhou Huihe Machine Facture Co., Ltd.
Shanghai Genyond Technology Co., Ltd.
Shanghai Uwants Technology Development Co., Ltd.
Heng Sheng Technology (Hk) Limited
Hunan Top Oxy-Hydrogen Generator Co., Ltd.
Hangzhou Hongli Pipe Machinery Co., Ltd.