Jianshe industries group., Ltd. is a large-scale mainstay enterprise belonging to Chinese ordnance equipment company(group), and is one of 33 key enterprises supported by our states. Jianshe industries was named hanyang weapon factory in qin dynasty, which was established by zhangzhi dong. Jianshe industries group has experience three centuries, and imported advance technology from overseas. Through more than one hundred years developing, jianshe industries group has achieved fame in world. Century ordnance and the change from milltary to civil one for 20years as well as sinse cooperation with YAMAHA Co., Ltd. Jianshe is the special base where casting and forging blank of motorcycle automobile and automotove air condition compressor are proud. The products have exported 70countries and cities.