How can I know the names of all enterprises and institutions in Heilongjiang Province?

Part I Directory of Enterprises and Institutions in Environmental Protection Industry

Beijing

Tianjin

Hebei Province

Shanxi province

Inner Mongolia

Liaoning province

Jilin province

Heilongjiang province

Shanghai

Jiangsu Province

Zhejiang Province

Anhui province

Fujian Province

Jiangxi province

Shandong Province

Henan Province

Hubei province

Hunan province

Guangdong Province

Guangxi Zhuang Autonomous Region

Hainan province

Sichuan Province

Guizhou Province

Yunnan Province

Shanxi(Province)

Gansu province

Qinghai province

Ningxia Hui Autonomous Region

Xinjiang Uygur Autonomous Region

Part II Classification of Environmental Protection Products

Water pollution control equipment

1 sedimentation unit

2 Pressure filtration and suction filtration device

3 evaporation device

4 acid-base neutralization device

5 redox device

6 oxidation and disinfection device

7 condensation reaction device

8 Stripping and Purging Unit

9 adsorption device

10 ion exchange device

1 1 clarifier

12 membrane separation device

13 biofilm treatment device

14 activated sludge treatment unit

15 oxygen supply and aeration device

16 anaerobic treatment unit

17 physicochemical combined treatment device

18 biochemical combined treatment unit

19 other equipment

20 floating separation device

2 1 air flotation separation device

22 centrifugal separation device

23 magnetic separation device

24 screening equipment

25 filtration device

26 Other treatment equipment accessories

Air pollution control equipment

1 settling chamber and inertial force dust removal device

2 electrostatic defogging device

3 adsorption and absorption device

4 oxidation-reduction method and biological purification device

5 condensation purification device

6 automobile exhaust purification device

7 Other purification devices

8 cyclone dust removal device

9 wet dust collector

10 wet demister

1 1 filter type dust removal and fog removal device

12 bag filter

13 electrostatic precipitator

Solid waste treatment and disposal equipment

Noise and vibration control equipment

5. Monitoring instruments