Being the predecessor of Yunnan Southwest and Instrument Factory founded in 1939, The Yunnan Southwest and Instrument Industrial Co. , Ltd. Is a state- Owned company invested by a sole investor and established after reform in its system in April 2002. As a large- Size first- Class enterprise, It is now under the jurisdiction of China South Industries Group Corp. With a land area of 1. 88 square kilometers. The company has over 3600staff and workers, Including 285 technicial staff and strong capability of mechanicial processing, Forging, Sand- Casting, Precision casting, Surface treament, Heat treatment and the processing of cutting, Clamping and measuring moulds. And it also has a length measuring station and a first- Class national institution of physicial and chemical testing.