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Qingdao Kaijie Heavy Industry Machinery Co., Ltd.
Weifang Better Heavy Machinery Science and Technology Co., Ltd.
Guangxi Huihuang Langjie Environmental & Tech Co., Ltd.
Qingdao Guangneng Rubbers & Plastics Chemical Co., Ltd.
Liaoning Hanzheng Environmental Protection Equipment Engineering Co., Ltd.
Qingdao Loobo Environmental Protection Technology Co., Ltd.
CHONGQING ZANYO ELECTROMECHANICAL AND MACHINERY CO., LTD.
Shandong Better Environmental Protection Technology Co., Ltd.
Qingdao Olympia Heat Energy Equipment Co., Ltd.