Title
Date
A universal measuring ruler and a construction method for assembling pipe truss corbels (Invention: ZL201410292972.2)
2014.06.24
A universal measuring ruler (Utility Model: ZL201420342516.X)
2014.06.24
A clamp-type cantilevered net connector (Utility Model: ZL201220447016.3)
2012.09.04
A standard modular working platform mechanism for high-altitude construction (Utility Model: ZL201220446480.0)
2012.09.04
A submerged-arc welding device for straight inner seams of rolled steel pipes (Utility Model: ZL201220220238.1)
2012.05.16