中联重科ZTC251V452起重机的优点包括：1. 刚性强：机身结构经过优化设计，具有很强的刚性，能够在起重过程中保持稳定。2. 作业范围广：该起重机配备了长臂和大吨位起重能力，可以满足多种作业需求。3. 高效节能：起重机采用先进的液压系统和动力配置，在保证高效作业的同时大幅度降低能耗。4. 操作简便：起重机设备配备了智能化控制系统，操作简单易学，能够提高工作效率。5. 安全可靠：起重机采用了先进的安全技术，具备多重安全保护措施，确保操作过程中的安全性。6. 维护便捷：该起重机采用模块化设计，机件易于维修和更换，维护便捷。7. 抗风能力强：起重机结构坚固，能够抵御大风的影响，保证起重作业的稳定性。总的来说，中联重科ZTC251V452起重机在刚性、作业范围、高效节能、操作简便、安全可靠、维护便捷和抗风能力等方面具有优越性能，能够满足各种起重作业的需求。

The advantages of Zoomlion ZTC251V452 crane include:1. Strong rigidity: the structure of the body has been optimized and designed to have strong rigidity, which can maintain stability in the lifting process.2. Wide range of operations: the crane is equipped with a long jib and a large-tonnage lifting capacity, which can meet a variety of operational needs.3. High efficiency and energy saving: the crane adopts advanced hydraulic system and power configuration, which can greatly reduce the energy consumption while guaranteeing high efficiency. Easy operation: the crane is equipped with intelligent control system, easy to operate and improve work efficiency. 5. Safe and reliable: the crane adopts advanced safety technology with multiple safety protection measures to ensure safety during operation. 6. Convenient maintenance: the crane adopts a modular design, the parts are easy to repair and replace, and convenient maintenance. 7. Strong wind resistance: the crane has a sturdy structure that can withstand the effects of high winds and ensure the stability of lifting operations. Overall, Zoomlion ZTC251V452 crane has superior performance in terms of rigidity, operating range, high efficiency and energy saving, easy operation, safety and reliability, easy maintenance and wind resistance, which can meet the needs of various lifting operations.