徐工QY25K-II起重机的优点有：1. 强大的起重能力：QY25K-II起重机具有25吨的最大起重能力，可以轻松应对大多数起重作业需求。2. 广泛的作业范围：该起重机配备了30m的长臂，并可选配20m、27m、35m或40m的变幅臂，可实现更大的作业范围。3. 灵活性和便捷性：QY25K-II起重机的车辆底盘采用了徐工自主研发的底盘技术，具有强大的动力、可靠的性能和灵活的操控，适用于各种复杂的作业环境。4. 高效的操作性能：该起重机配备了多种先进的操作辅助功能，如可变幅、伸缩式臂、自动液压支腿等，可大幅提高作业效率和操作便捷性。5. 安全可靠：徐工QY25K-II起重机采用了先进的液压系统和稳定控制技术，能够保证作业的安全可靠性。6. 低维护成本：该起重机具有可靠的质量和耐用性，可减少维护和保养成本，延长使用寿命。7. 人性化设计：徐工QY25K-II起重机的驾驶室采用了人性化设计，提供舒适的操作环境，增加了操作员的工作舒适性。

Advantages of XCMG QY25K-II crane include: 1. Powerful lifting capacity: QY25K-II crane has a maximum lifting capacity of 25 tons, which can easily cope with most lifting requirements.2. Wide operating range: the crane is equipped with a 30m long boom and optional 20m, 27m, 35m or 40m luffing jibs, which allows for a wider operating range.3. Flexibility and Convenience: The vehicle chassis of QY25K-II crane adopts XCMG's self-developed chassis technology, which is characterized by strong power, reliable performance and flexible handling, and is suitable for a variety of complex operating environments.4. Efficient Operation Performance: The crane is equipped with a variety of advanced operation auxiliary functions, such as luffing and telescopic jibs, automatic hydraulic outriggers, etc., which can greatly improve the operation efficiency and Safety and reliability: XCMG QY25K-II crane adopts advanced hydraulic system and stability control technology, which can ensure the safety and reliability of the operation. 6. Low maintenance cost: the crane has reliable quality and durability, which can reduce the maintenance and repair costs and prolong the service life. 7. Humanized design: XCMG QY25K-II crane's cab adopts humanized design, providing comfortable operation environment. 8. design, providing a comfortable operating environment and increasing the operator's working comfort.