Referencia	Título	Categoría
ISO/TC 17	Steel	A
ISO/TC 17/SC 21	Environment related to climate change in the iron and steel industry	A
ISO/TC 59/SC 17	Sustainability in buildings and civil engineering works	A
ISO/TC 207	Environmental management	A
ISO/TC 207/SC 1	Environmental management systems	A
ISO/TC 207/SC 2	Environmental auditing and related practices	A
ISO/TC 207/SC 4	Environmental performance evaluation	A
ISO/TC 207/SC 5	Life cycle assessment	A
ISO/TC 207/SC 7	Greenhouse gas and climate change management and related activities	A
ISO/TC 308	Chain of custody	A
ISO/TC 323	Circular economy	A

Notas

Liaisons A: Organizations that make an effective contribution to the work of the technical committee or subcommittee for questions dealt with by this technical committee or subcommittee. 
Liaisons B: Organizations that have indicated a wish to be kept informed of the work of the technical committee or subcommittee. 
Liaisons C: Organizations that make a technical contribution to and participate actively in the work of a working group.