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Beijing FEDA High-Tech Gas Corporation
Qingdao Olympia Heat Energy Equipment Co., Ltd.
Weifang Better Heavy Machinery Science and Technology Co., Ltd.
Qingdao Guangneng Rubbers & Plastics Chemical Co., Ltd.
Guangxi Huihuang Langjie Environmental & Tech Co., Ltd.
Liaoning Hanzheng Environmental Protection Equipment Engineering Co., Ltd.
Qingdao Kaijie Heavy Industry Machinery Co., Ltd.
CHONGQING ZANYO ELECTROMECHANICAL AND MACHINERY CO., LTD.
Shenzhen Lianxin Testing Equipment Co., Ltd.
Wenzhou Zhonghuan Packaging Machinery Co.,Ltd
Qingdao Loobo Environmental Protection Technology Co., Ltd.
Liaoyang Hongji Machinery Co., Ltd.