中联重科ZTC250V451.1起重机具有以下优点：1. 安全性高：ZTC250V451.1起重机配备了先进的安全保护装置，如超载保护装置、倾覆保护装置等，能够确保起重过程中的安全。2. 能效比高：该起重机采用了先进的液压系统和动力匹配技术，能够实现更高的工作效率和更低的能耗。3. 操控性强：配备了先进的电子控制系统和人机工程学设计的操作台，使操作更加简便、精确，提高了操控性和操作人员的工作效率。4. 适应性强：ZTC250V451.1起重机具有良好的爬坡能力和车辆横向稳定性，适应于复杂地形和狭窄工作环境。5. 维修保养方便：采用了模块化设计，各部分结构组件可以快速更换和维修，降低了维修成本和停机时间。6. 机动性好：ZTC250V451.1起重机结构紧凑，整机可快速拆装和运输，能够适应快速转场和多个工地的需求。总之，中联重科ZTC250V451.1起重机具有安全可靠、高效节能、易于操作和维护等优点，能够满足各种起重作业的需求。

Zoomlion ZTC250V451.1 crane has the following advantages: 1. High safety: ZTC250V451.1 crane is equipped with advanced safety protection devices, such as overload protection device, tipping protection device, etc., which can ensure the safety of lifting process. 2. High energy-efficiency ratio: the crane adopts advanced hydraulic system and power matching technology, which can realize higher efficiency and lower energy consumption. 3. High maneuverability: equipped with advanced electronic control system and ergonomically designed operator console, which makes the operation easier and more precise, and improves the control and operator's work efficiency. 4. Strong maneuverability: equipped with advanced electronic control system and ergonomic design of the operator's console, making the operation easier and more accurate, improving the maneuverability and efficiency of the operator.4. Strong adaptability: ZTC250V451.1 crane has good climbing ability and lateral stability of the vehicle, adapted to complex terrain and narrow working environment.5. Convenient repair and maintenance : It adopts modular design, and the structural components of each part can be quickly replaced and repaired, which reduces the maintenance cost and downtime.6. Good mobility: ZTC250V451.1 crane is compact, and the whole crane can be quickly disassembled and transported, which is able to adapt to the needs of rapid transit and multiple construction sites. In short, Zoomlion ZTC250V451.1 crane has the advantages of safety and reliability, high efficiency and energy saving, easy to operate and maintain, and can meet the needs of various lifting operations.