DIFF Subgroup Additional Only
C01B 2203/04 containing a purification step for the hydrogen or the synthesis gas
Full Title
Integrated processes for the production of hydrogen or synthesis gas > containing a purification step for the hydrogen or the synthesis gas
Of 7 combined children, 0 exist in both systems.
7 codes are CPC-only extensions.
Note: 7 CPC extensions are marked as secondary classification only.