AG 818 series products are auto land leveling control system developed by our company for land leveling application which is based on laser and electric hydraulic control. The system is high accuracy, high precision of EHC, stable performance, easy operation, dust and water proof, shockproof and durable, It is used for high precision land leveling, the accuracy is +/-2cm, it helps forwatersaving irrigation, uniformly fertilization and output increasing.