FJDynamics Launches the G31 PRO to Elevate Precision and Efficiency for Every Operator in the Construction Industry Today, FJDynamics is excited to launch its all-new and powerful FJD G31 PRO Excavator Guidance System , an evolution that not just surpasses but redefines its 2020 predecessor, the G31. Combining sign... Digital Construction FJD G31 PRO Excavator guidance system lug 31, 2024