Where can I hang the registration card for tower crane?

The boarding pass is hung on the side of the swing arm of the tower crane.

"Regulations on Safety Supervision and Management of Construction Hoisting Machinery" The registration sign of tower crane should be placed in or attached to the prominent position of the equipment and hung on the side of the swing arm of tower crane. The user shall, within 30 days from the date of acceptance of the mechanical installation of the tower crane, handle the use registration with the competent construction department of the local people's government at or above the county level according to the boarding pass information.