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

Part I Directory of Enterprises and Institutions in the Environmental Protection Industry

Beijing

Tianjin

Hebei

Shanxi

Nemenggu

Liaoning

Jilin

Helongjiang

Municipality of Shanghai

Jiangsu

Zhejiang

Anhui

Fujian

Jiangxi

Shanghai

Shanghai

Jiangsu

Zhejiang

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

I Water Pollution Control Equipment

1 Sedimentation Device

2 Filter Pressing and Filter Suction Device

3 Evaporation devices

4 Acid-base neutralization devices

5 Redox devices

6 Oxidation and disinfection devices

7 Coagulation reaction devices

8 Stripping and blowing off devices

9 Adsorption devices

10 Ion exchange devices

11 Clarification devices

12 Membrane separation devices

13 Biofilm treatment device

14 Activated sludge treatment device

15 Oxygen supply and aeration device

16 Anaerobic treatment device

17 Physical and chemical combination treatment device

18 Biochemical combination treatment device

19 Other equipment

20 Floatation separation device

21 Air flotation separation device

22 Centrifugal separation device

23 Magnetic separation device

24 Filtering device

25 Filtering device

26 Other accessories of the treatment device

Two air pollution treatment devices

1 Settling chamber and inertia force dust removal device

2 Electrostatic mist elimination device

3 Adsorption and absorption device

4 Redox and biological purification device

5 Condensation purification device

6 Vehicle exhaust purification device

7 Other purification devices

8 Cyclone dust device

9 Wet dust collector

10 Wet mist elimination device

11 Filtration device

11 Filtration dust and mist removal devices

12 Baghouse dust collectors

13 Electrostatic precipitator

3 Solid waste treatment and disposal equipment

4 Noise and vibration control equipment

5 Monitoring instruments