The XE300 Guidance System is developed and manufactured by ComNav Technology Ltd. for excavators. The system employs high-precision GNSS positioning and heading technology, and inertial sensors as well. It can provide precise guidance to drivers to control the bucket for tasks, such as levelling, slope cutting, digging, etc. Efficiency and productivity can be improved by eliminating the need for manual staking. Compared with traditional operation, it can achieve centimeter-level accuracy in less time, decrease rework, significantly increasing efficiency and ensuring higher quality.