【 Doosan 300-7 Second-hand Excavator This is a second-hand Doosan 300-7 excavator with outstanding performance and reliable quality. It only comes with a bucket and is highly suitable for excavation operations in various medium and large-scale engineering projects. This machine has a cumulative working time of only 10.6 hours, almost equivalent to a brand new device. It is used at an extremely low frequency, and its overall condition is maintained very well. Both its appearance and internal mechanical structure are in the best condition. In terms of the power system, the Doosan 300-7 is equipped with an efficient and energy-saving engine, which not only provides strong power output but also has excellent fuel economy, ensuring stable operation even under long-term and high-intensity work. Meanwhile, its advanced emission control system complies with the latest environmental protection standards, reducing the impact on the environment. The hydraulic system is a major highlight of this excavator. It adopts a high-performance pump and valve body combination, ensuring rapid response and smooth operation. Whether it is fine control or large-scale mining, it can be handled with ease. In addition, the efficient heat dissipation design effe2025-12-12 15:53:11