• 

  Shandong Meiling Zhonglian Environmental Engineering Co., Ltd

• 

  Qingdao Hailin Water Group Laixi Branch

• 

  Beijing Enterprises Water Group Limited

• 

  Sanda Membrane Environmental Technology Co., Ltd

• 

  Sandamak (Xiamen) Co., Ltd

• 

  Zaozhuang Yongli Chemical Co., Ltd

• 

  Weifang Guanghua Fine Chemical Co., Ltd

• 

  Shandong Jingnuo Machinery Co., Ltd