迪万伦DX215-9C ACE挖掘机的优点有：1. 功能强大：装备有大功率的引擎和高效的液压系统，可以轻松应对各种挖掘作业，包括土方工程、矿山挖掘等。2. 操控方便：配备了先进的操作系统和人机工程学设计的驾驶室，操控便捷，减轻操作人员的劳动强度。3. 稳定性高：采用坚固的底盘和前后下摆臂结构，使得挖掘机具有较好的稳定性，可以在复杂的工作环境下保持平衡。4. 维修方便：整机的维修保养点设置合理，容易进行日常的维修和保养工作，大大降低了维修成本和时间。5. 能耗低：采用了低燃油消耗的发动机，减少了能源消耗，提高了燃油经济性。6. 配置丰富：可以根据用户需求进行定制化配置，提供各种不同的工作装置和附件，提供更多的施工解决方案。7. 经济实惠：相比同类挖掘机，迪万伦DX215-9C ACE挖掘机具有较低的购买成本和运营成本，具有较高的性价比。总的来说，迪万伦DX215-9C ACE挖掘机具有强大的功能、方便的操控、高稳定性、易维修、低能耗、丰富的配置和经济实惠等优点，适用于各种挖掘作业。

Advantages of Diwanlun DX215-9C ACE excavator include: 1. powerful function: equipped with high power engine and efficient hydraulic system, it can easily cope with all kinds of excavation work, including earthwork, mine excavation, etc. 2. convenient control: equipped with advanced operating system and ergonomically designed cab, it is easy to control and reduce the labor intensity of the operator. 3. high stability: adopting Sturdy chassis and front and rear swing arm structure, making the excavator has good stability, can maintain balance in the complex working environment. 4. convenient maintenance: the machine's maintenance points are set up reasonably, easy to carry out routine maintenance and repair work, greatly reducing the cost and time of maintenance. 5. low energy consumption: the use of low-fuel-consumption engine, reducing energy consumption and improving fuel economy. 6. Rich configuration: It can be customized according to users' needs, providing various working devices and attachments, and more construction solutions. 7. Economical: Compared with similar excavators, Diwanlun DX215-9C ACE excavator has lower purchasing and operating costs, and has a high cost performance. Overall, DX215-9C ACE excavator has the advantages of powerful function, convenient control, high stability, easy maintenance, low energy consumption, rich configuration and economical, which is suitable for all kinds of excavation work.