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