Reference	Title	Category
ISO/TC 61/SC 14	Environmental aspects	A
ISO/TC 308	Chain of custody	A
ISO/TC 323	Circular economy	A
ISO/TC 47/WG 4	Chemical recycling of organic materials	C
ISO/TC 207/SC 3/WG 10	Revision of ISO 14021	C

Notes

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.