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中聯重科ZTC201E551起重機的優點有：1. 高承載能力：該起重機具有較高的起重能力，能夠滿足大多數起重工作的需求。2. 靈活性強：該起重機具備靈活的工作半徑和360度無死角的回轉能力，適應各種復雜工況。3. 操作簡便：該起重機配備電子控制系統，操作簡單方便，提高工作效率。4. 穩定性高：該起重機配備穩定器可以提供良好的平衡和穩定性，確保起重過程安全可靠。5. 可靠性強：該起重機采用先進的設計和制造技術，具有較高的可靠性和耐久性，減少故障和維修時間。6. 維護成本低：該起重機配備自動潤滑系統，減少了維護和保養成本。7. 安全性高：該起重機采用多重安全保護裝置，確保工作過程中人員和設備安全。

Advantages of Zoomlion ZTC201E551 crane include:1. High load capacity: the crane has high lifting capacity, which can meet the needs of most lifting work.2. Flexible: the crane has flexible working radius and 360-degree dead-angle-free slewing ability, adapting to various complex working conditions.3. Easy operation: the crane is equipped with electronic control system, which is easy and convenient to operate, improving work efficiency. High stability: the crane is equipped with stabilizers that can provide good balance and stability to ensure safe and reliable lifting process.5. Reliability: the crane adopts advanced design and manufacturing technology, which has high reliability and durability and reduces the breakdown and maintenance time.6. Low maintenance cost: the crane is equipped with an automatic lubrication system, which reduces the cost of maintenance and upkeep.7. High safety: the crane adopts multiple safety protection devices to ensure the safety of personnel and equipment during the working process.