This machine is used in south area (Approximately 2.5h driving range reach) of Exeter. At present, this machine has been working for >1,500h. The working site is for sand yard mining and this machine is mainly used for construction of dams around the sand yard, the leveling of site, and trimming of sand yard internal roads. This working site is owned by the group of the agency company. The agency company is mainly engaged in the construction material business, including concrete and gravel, and, depending on the business needs, is also engaged in the construction machinery sales and leasing business. This sand yard is in medium scale and this product is mainly used for trimming of dams around the sand yard site, trimming of sand yard internal roads, and the leveling of working site. As the sole bulldozer in the site, this machine is used under high workload and the daily working time is approximately 8 hours.