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