In the mine, 9 sets Liugong excavators work an average of 20 hours a day, with two shifts of operators and almost no rest of the equipment, which greatly tests the reliability of the excavator and the service team. "If the mine wants efficiency, it needs output. To ensure output, it needs non-stop construction of excavators. Without excellent machinery and Liugong genuine spare parts, there is no place in the mine." Geng said that the original Liugong parts were replaced in time within 10 years of the mine, which ensured the production demand of the mine, and the quality could stand the test of time.