沃尔沃EW140 CN4国四挖掘机有以下优点：1. 强大的动力系统：搭载先进的国四排放标准发动机，动力强劲、燃油经济，可提供出色的挖掘和(hé)装载能力。2. 高(gāo)效的液压系统：配备先进的液压系统，能够实现高(gāo)效的工作性(xìng)能和(hé)操作精度，提高(gāo)工作效率。3. 先进的控制系统：配备精确的电子控制系统，能够实现准确的汽车级(jí)驾驶(shǐ)体验，提高(gāo)机械的稳定性(xìng)和(hé)可靠性(xìng)。4. 舒适安全的驾驶(shǐ)室：驾驶(shǐ)室宽敞舒适，配备空调和(hé)高(gāo)度可调的座椅，提供良好的操作环境。同时，还配备了先进的安全设备，如防滚护栏和(hé)安全带，为操作员提供良好的安全保护。5. 简洁(jié)易用的维护系统：沃尔沃EW140 CN4国四挖掘机采用简洁(jié)易用的维护系统，可快速进行日常维护和(hé)保养，减少机械的停机时间，提高(gāo)作业效率。6. 高(gāo)品(pǐn)质的整机配置：选用高(gāo)品(pǐn)质的液压元件和(hé)工作装置，提高(gāo)挖掘机的可靠性(xìng)和(hé)耐用性(xìng)，延长使用寿命。总的来说，沃尔沃EW140 CN4国四挖掘机拥有强大的动力、高(gāo)效的液压系统、先进的控制系统、舒适安全的驾驶(shǐ)室、简洁(jié)易用的维护系统和(hé)高(gāo)品(pǐn)质的整机配置等优点，适合用于各种挖掘和(hé)装载作业。

Volvo EW140 CN4 National IV Excavator has the following advantages:1. Powerful power system: equipped with advanced National IV emission standard engine, it has strong power and fuel economy, which can provide excellent digging and loading capacity.2. High-efficiency hydraulic system: equipped with advanced hydraulic system, it is able to realize high efficiency working performance and operation precision, and improve working efficiency.3. Advanced control system: equipped with precise electronic control system, it is able to realize accurate automotive-grade driving experience and improve the stability and reliability of the machinery. 4. Comfortable and safe cab: The cab is spacious and comfortable, equipped with air conditioning and height-adjustable seats to provide a good operating environment. Meanwhile, it is also equipped with advanced safety equipment, such as anti-roll barriers and seat belts, to provide good safety protection for the operator.5. Simple and easy-to-use maintenance system: Volvo EW140 CN4 National 4 excavator adopts simple and easy-to-use maintenance system, which can quickly carry out the routine maintenance and upkeep, reduce the machine's downtime, and increase the operational efficiency.6. High-quality machine configuration: High-quality hydraulic components and working devices are selected to improve the stability and reliability of the excavator. and working devices to improve the reliability and durability of the excavator and extend its service life. Overall, Volvo EW140 CN4 national four excavator has the advantages of powerful power, efficient hydraulic system, advanced control system, comfortable and safe cab, simple and easy-to-use maintenance system and high-quality machine configuration, which is suitable for all kinds of excavation and loading operations.