Capsule dampers like the UDH are used in loo seats and wherever rotational force needs calming.
The HG-JH14-50 has an integral UDH style damper as part of the hinge
The UDD is a disc damper, similar function to the UDH but in a different format.
The HDS-10S stay has soft-down and lift-assist.
Used in the domestic market for toy and blanket boxes the S-AT is the best solution for lift up flaps.
The massive HG-JH210, for heavy metal applications