The main performance features of Doosan DH220LC-9 excavator can be summarized as follows: 1. High efficiency: This excavator has strong digging force. The bucket digging force reaches 144.11N and the stick digging force is 102.9kN. It is suitable for high-intensity excavation operations. 2. Strong flexibility: Doosan DH220LC-9 excavator has a walking speed of 3.1-5.4kmh and can move quickly within the work area. Its 70% gradeability enables it to cope with complex and varied terrain. 3. High work efficiency: The excavator has a rotation speed of 12.1 rpm, which can quickly complete excavation and loading operations and improve work efficiency. 4. Strong adaptability: This excavator is suitable for a variety of working conditions, including water conservancy projects, wood loading and unloading, and logging. Its standard bucket capacity is 0.93m³, which can meet the needs of different scales of work. 5. Strong power: Doosan DH220LC-9 excavator is equipped with DE08TIS brand model engine with high rated power. The working mode is turbocharging, direct injection, and mechanical full speed regulation, ensuring excellent power performance and fuel economy. 6. Reliable and durable: The whole machine has a working weight of 22,000kg, has high stability and durability, and can perform high-intensity work for a long time. To sum up, the Doosan DH220LC-9 excavator is an efficient, flexible, adaptable, powerful, reliable and durable medium-sized excavator that can meet the needs of various engineering sites.