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　　Nanjing Atlantic Instrument Co., Ltd. and Nanjing Optical Surveying Instrument Co., Ltd. are actually a joint venture company with two names. Founded in 1966 in the outskirts of the ancient city Nanjing, the factory is one of China’s earliest key professional enterprises engaged in the production and sales of geodetic instruments.

　　Our leading products are “Zhongguang” geodetic instrument series, mainly including DS3 levels, DSZ3 automatic levels and theodolites, and DSJ3 laser levels and tripod instruments. The company passed the certification of ISO9001: 2000 Quality Management System in 2003.

　　With about three decades of experience in manufacturing geodetic instruments and more than 30 CNC processing apparatuses, the company shows powerful strength in mechanical processing, instrument manufacturing,