Profile: Erdi Laser Ltd specializes in R&D, design and production of core chips & systems from lasers and eye-safe laser ranging modules sensors. 1535nm laser rangefinder-DY3K5 small laser rangefinder has a compact structure and is easy to install and operate. The working light source adopts a solid-state laser in the eye-safe band. Long service life and low power consumption. The fiber optic integrated navigation system FS300-42 is based on cost-effective closed-loop fiber optic gyroscope, accelerometer and high-end GNSS receiving board, through multi-sensor fusion and navigation solution algorithm implementation to meet the needs of medium and high-precision mobile measurement systems.