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徐工QY20K5C起重機具有以下優點：1. 大起重能力：QY20K5C起重機的起重能力達到20噸，可以滿足大多數起重作業的需求。2. 靈活性強：該起重機配備伸縮式臂架和旋轉回轉臺，可以實現360度全方位旋轉和多段折疊伸縮，使起重操作更加靈活和便捷。3. 操作簡便：QY20K5C起重機配備先進的液壓系統和智能控制系統，操作簡單方便，可以快速調整起重動作和角度。4. 安全可靠：起重機配備多重安全裝置，如超載保護裝置、限位裝置等，確保起重操作過程安全可靠。5. 節能環保：QY20K5C起重機采用先進的動力系統和液壓系統，具有低耗能、低噪音和低排放的特點，實現了節能環保的目標。6. 質量和耐久性：作為徐工品牌的產品，QY20K5C起重機具有優良的質量和耐久性，可以在各種惡劣的工作環境下長時間使用。

XCMG QY20K5C crane has the following advantages:1. Large lifting capacity: the lifting capacity of QY20K5C crane reaches 20 tons, which can meet the needs of most lifting operations.2. Flexible: the crane is equipped with telescopic boom and rotating slewing platform, which can realize 360-degree all-around rotation and multi-segment folding and retracting, which makes lifting operations more flexible and convenient.3. Easy to operate: QY20K5C crane is equipped with advanced hydraulic system and intelligent control system, easy and convenient to operate, can quickly adjust the lifting action and angle. 4. safe and reliable: the crane is equipped with multiple safety devices, such as overload protection device, limit device, etc., to ensure that lifting operations are safe and reliable. 5. energy-saving and environmentally friendly: the QY20K5C crane is equipped with advanced power system and hydraulic system, which has the advantages of low energy consumption, low noise and low emissions. energy, low noise and low emission, realizing the goal of energy saving and environmental protection.6. Quality and durability: as a product of XCMG brand, QY20K5C crane has excellent quality and durability, and it can be used for a long time in all kinds of harsh working environments.