DIFF Main Group Additional Only
F25B 2400/00 General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
Of 22 combined children, 0 exist in both systems.
22 codes are CPC-only extensions.
Note: 22 CPC extensions are marked as secondary classification only.