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