三一重工STC250E5-2混动版起重机的优点包括：1. 高效节能：该起重机采用混合动力技术，可以在电动模式和发动机模式之间切换，根据实际需求来选择最适合的动力形式，从而大大节省燃油消耗，减少环境污染。2. 灵活多用途：该起重机具有很强的适应性和多功能性，可以适用于各种不同的工地和作业环境。同时，它具备强大的起重能力和卓越的稳定性，可以进行高效、安全的起重作业。3. 操作简便：该起重机采用先进的电动液压系统和智能控制技术，操作界面简洁明了，操作简便易懂。同时，在起重过程中，它还配备了多种安全保护装置，可以确保操作人员和周围环境的安全。4. 质量可靠：作为三一重工生产的产品，STC250E5-2混动版起重机具有优良的质量和可靠性，经过了严格的质量控制和多次的实际测试，可以在各种恶劣的工作条件下正常运行。5. 全球销售网络：作为一家全球领先的工程机械制造商，三一重工拥有完善的销售和服务网络，可以为用户提供及时的售后服务和技术支持，确保用户在使用过程中可以得到全方位的支持和保障。

The advantages of Sany STC250E5-2 hybrid crane include: 1. Energy efficient: the crane adopts hybrid technology, which can be switched between electric mode and engine mode, and the most suitable form of power can be selected according to the actual demand, which can greatly save fuel consumption and reduce environmental pollution. 2. Flexible and multi-purpose: the crane is highly adaptable and multi-functional, and can be applied to a variety of different sites and working environments. The crane is highly adaptable and multifunctional, and can be applied to various different sites and operating environments. At the same time, it has strong lifting capacity and excellent stability, and can carry out efficient and safe lifting operations. 3. easy operation: the crane adopts advanced electro-hydraulic system and intelligent control technology, the operation interface is simple and clear, and the operation is easy to understand. Meanwhile, it is equipped with various safety protection devices during lifting, which can ensure the safety of the operator and the surrounding environment.4. Reliable quality: As a product manufactured by Sany Heavy Industry, the STC250E5-2 Hybrid Crane has excellent quality and reliability, which has undergone strict quality control and many practical tests, and it can be operated normally under a variety of harsh working conditions.5. Global Sales Network: As a global leading construction machinery manufacturer, Sany Heavy Industry has a perfect sales and service network, which can provide timely after-sales service and technical support to ensure that users can get all-round support and protection in the process of use.