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