The Pitched Roof System is engineeered for the maximum flexibility possible in designing and planning for the commercial and residential roof solar system. It is applicable to install the usual framed module. The special extruded aluminum rail, special module, clamp kit and the various roof hooks can be high pre-assembly and make the installation easy and quick to save your labor cost and time. The customized length can eliminate the weld and cut onsite to keep the high anticorrosive performance, the structure strength and the appearance.