徐工QY12KC起重机的优点主要包括以下几个方面：1. 载重能力强：徐工QY12KC起重机具有较高的额定起重量，能够满足大部分工程项目的需求。同时，其配置的大功率发动机和先进的起重系统，能够提供稳定、高效的起重能力。2. 操控性好：徐工QY12KC起重机采用先进的液压控制系统和电控系统，操控灵活简便。操作人员可以通过触摸屏控制面板，直观地调整起重机的各项参数和工作状态，提高操控效率和准确性。3. 安全可靠：徐工QY12KC起重机配备了多种安全保护装置，如动态重载保护系统、自动平衡系统、限制起升高度等，可有效提升起重机的安全性能，避免事故发生。同时，起重机的结构设计合理，使用寿命长，维护方便。4. 灵活性强：徐工QY12KC起重机采用轮式底盘设计，具有较好的路面适应性和灵活性。同时，起重机的折叠臂结构设计紧凑，可以进行快速折叠和展开，便于在狭小空间中进行操作和转场。综上所述，徐工QY12KC起重机具有载重能力强、操控性好、安全可靠和灵活性强等优点，适用于各种建筑工程和物料搬运任务。

The advantages of XCMG QY12KC crane mainly include the following aspects: 1. Strong load capacity: XCMG QY12KC crane has a high rated lifting capacity, which can meet the needs of most projects. At the same time, its configuration of high-power engine and advanced lifting system can provide stable and efficient lifting capacity.2. Good maneuverability: XCMG QY12KC crane adopts advanced hydraulic control system and electronic control system, which makes it flexible and easy to maneuver. The operator can intuitively adjust the parameters and working status of the crane through the touch screen control panel to improve the efficiency and accuracy of the control.3. Safe and Reliable: The XCMG QY12KC crane is equipped with a variety of safety protection devices, such as dynamic heavy load protection system, automatic balancing system, limiting the height of the lift, etc., which can effectively improve the safety performance of the crane and avoid accidents. At the same time, the crane's structure is reasonably designed for long service life and easy maintenance.4. Flexible: XCMG QY12KC crane adopts wheeled chassis design, which has better road adaptability and flexibility. At the same time, the crane's folding boom structure is compactly designed, which can be quickly folded and unfolded, making it easy to operate and transit in a narrow space. In summary, XCMG QY12KC crane has the advantages of strong load capacity, good maneuverability, safety, reliability and flexibility, which is suitable for various construction projects and material handling tasks.