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Suzhou Since Gas System Co., Ltd.
Wuxi Zhongrui Air Separation Equipments Co., Ltd.
Hangzhou Chuankong General Equipment Co., Ltd.
Shenzhen Guanglei Electronic Co., Ltd.
Beijing Sunny Young Technology Company Limited
Hokaido Vacuum Technology (Int'l) Group Limited
Changsha Kingkar Eco-Technologies Co., Ltd.
Zhejiang Yuanda Air Separation Equipment Co., Ltd.
TIANJIN PUHUI SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD.