Referencia	Título	Categoría
ISO/TC 28/SC 4	Classifications and specifications	A
ISO/TC 131	Fluid power systems	A
ISO/TC 131/SC 2	Pumps, motors and integral transmissions	A
ISO/TC 131/SC 3	Cylinders	A
ISO/TC 131/SC 4	Connectors and similar products and components	A
ISO/TC 131/SC 5	Control products and components	A
ISO/TC 131/SC 7	Sealing devices	A
ISO/TC 131/SC 8	Product testing	A
ISO/TC 131/SC 9	Installations and systems	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.