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9

Mechanical and plant engineering

Machines and plants for the chemical and allied industries

Gas production and gas reclamation plants

5487.11

Hydrogen evolution plants

5487.12

Hydrogen generators

5487.14

Nitrogen production plants

5487.15

Nitrogen generators

5487.21

Oxygen production plants

5487.22

Oxygen generators

5487.23

Oxygen concentrators

5487.24

Ammonia production plants

5487.27

Carbon monoxide production plants

5487.31

Carbon dioxide production plants

5487.32

Carbon dioxide recovery plants

5487.37

Rotatory gas systems

5487.81

Inert gas generating plants

5487.85

Synthesis gas production plants

5487.98

Hydrogen recovery plants