... & store. 3. Strong loading capacity. 4. competiv price 2012 hot 200*200mm aluminum box truss, spigot truss, stage truss Item ... lighg, easy to carry, transport and store.3. Conical coupler for connecting, easy to assemble and disassemble4. Strong loading capacity.5. ... , wedding ceremonies, studio, product fairs, the concert hall and so on.Its main characteristic is of easy usage, quick installation, ...