Harbin Optical Instrument Factory is a professional manufacturer, the leader geodesic survey instrument producer in China \r\n\r\n The product series: Geology compass, Forest compass, Leaf area meter, Digital planimeter and Laser pointer, Height measure compass, etc. We also manufacture steel tape rule, optical lens, raster, quartz crystal, prism. Our enterprise is also in a quite position to manufacture for you in accordance with your requirement (drawings and samples) \r\n\r\nWe have been estimated to be the enterprise of the business quantity performance by the China official. We have already gone through the certificate of ISO 9001:2000\r\n\r\nWelcome to negotiate business.