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