Sichuan province dajia environment art engineering co., ltd
Sichuan Qingyuan environmental engineering co., ltd.
Sichuan huate technology environment engineering co., ltd
Sichuan hope environmental protection engineering technology co., ltd
Sichuan Asia-Pacific Environmental Engineering Co., Ltd. (also known as Sichuan Asia-Pacific Water Treatment Technology Engineering Design Institute, founded in 1984, originally belonging to the Science and Technology Commission, and later restructured)
Sichuan xingke environmental protection engineering equipment co., ltd
Sichuan zhongwang sound insulation noise reduction environmental protection engineering co., ltd
Sichuan Yuyang Environmental Engineering Co., Ltd., etc.