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DIFF Subgroup Additional Only
C21B 2100/20

Increasing the gas reduction potential of recycled exhaust gases

Full Title

Handling of exhaust gases produced during the manufacture of iron or steel > Increasing the gas reduction potential of recycled exhaust gases

Of 4 combined children, 0 exist in both systems.

4 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.