Shenzhen NNPO is an innovative company ,which is specialized in optics , thermal image night visions and related outdoor products with development ,production ,sales & service all in one .Our company's headquarter is in Beijing, but our production factory is located in manufacturing frontier zone in Songgang of Shenzhen ,We have our own strong R&D engineering team ,we also have several doctors who are rich experience in optics and thermal image fields more than 20 years.