RK 'Smile' truss has different types, for example, categorized by their material makeup: Steel truss, Aluminum truss. For people and organizations who have a routine need for a stage truss, usually hang LED, lighting, tent, sound, LED screen and banner on it.

In many applications, Steel truss systems may be used to form the walls, floors, and ceilings in a commercial or industrial building (Specially-constructed steel trusses can also be used to form complex architectural elements on the interior or exterior of a building. ). Aluminum and other lightweight metals are even used to form modular or portable trusses ( Aluminum truss include lighting truss units or portable models designed for displays or staging.).

Other categorized by their shape: Triangular truss, square truss. Of course stage truss also can be categorized by their design, function...