LanLan is a Chinese puzzle manufacturer, very well-known for their wide variety of shape mods. Over the years, they’ve gained popularity mainly due to their inventiveness and great performance for these unofficial (non-WCA) puzzles.
The myriad of mods available includes a 4x4 Rhombic Dodecahedron, Skewb Curvy Rhombohedron, Gear Mastermorphix, Gear Tetrakaidecahedron, Rex Cube and many more puzzles.
Just by the complexity of their names, one can tell how huge the variety is, and how interesting these shape mods created by LanLan are. They can be very fun to collect as well as solve as and when you feel like.