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Beijing Sunny Young Technology Company Limited
Changsha Kingkar Eco-Technologies Co., Ltd.
Suzhou Since Gas System Co., Ltd.
Wuhu Frontage Imp. and Exp. Co., Ltd.
Guangzhou Huilin Air Separation Equipment Co., Ltd.
Hokaido Vacuum Technology (Int'l) Group Limited
Wuxi Zhongrui Air Separation Equipments Co., Ltd.
Zhejiang Yuanda Air Separation Equipment Co., Ltd.