1, to ensure that it can base after the normal operation, but also each place fixed, well after the four direction to ensure base is in the state level, thus the base will be tilted. In the base of strengthening is to be elected in a flat place:.

      2, in the build angle bracket, installation and installation of anti head truss side set square set when we are careful, because the inclined bracket is on the whole stage support, use the 8 oblique brackets will be built, so take note of.



     , 3, the head is an important device, it is closely linked to the various parts of the truss device