Beijing Naijiu Weiye Technology Co., Ltd is one unit of National High-tech Enterprises (No.: GR201011000471) specializing on designing, developing and selling manhole cover, grate, scaffoldings, scaffolding coupler, concrete NDT (Non Destructive Testing) equipments, construction instruments, material (concrete/cement/soil/asphalt) test equipment and the others building facilities. The company takes the science and technology as the guide, with strict management and strong research and development team. It is one of the units Ministry of Construction standard JGJ 206-2010 , and qualified for...