徐工QY75KC起重机的优点包括：1. 高效：QY75KC起重机采用了先进的液压系统和电气控制技术，具有升降速度快、操作方便、高效能的特点，能够快速完成各项起重任务。2. 载重能力强：QY75KC起重机具有较高的最大起重量，能够承载较重的物体进行吊装作业。3. 稳定性好：QY75KC起重机具有较高的起重高度和幅度，通过合理的重心设计和结构强度设计，能够保持稳定的工作状态，提高工作安全性。4. 灵活性高：QY75KC起重机具有独立腿支撑和铰接式伸缩臂结构，使其具备了较强的适应性，能够适应各种不同的工作场地和工况要求。5. 操作简便：QY75KC起重机配备了先进的液晶显示屏，操作界面友好，功能齐全，操作便捷，方便驾驶员进行各项操作。6. 安全性高：QY75KC起重机采用了多项安全技术，如超载保护、限制起升高度保护、限制转动角度保护等，能够有效保障起重作业的安全。总体来说，徐工QY75KC起重机具有高效、稳定、安全、灵活等优点，适用于各种大型工程建设、运输、装卸等需要起重作业的场合。

The advantages of XCMG QY75KC crane include:1. High efficiency: QY75KC crane adopts advanced hydraulic system and electrical control technology, which has the features of fast lifting speed, easy operation and high efficiency, and is able to complete all lifting tasks quickly.2. Strong loading capacity: QY75KC crane has a high maximum lifting capacity, and is able to carry heavier objects for lifting and loading operations.3. Good stability: QY75KC crane has a high lifting height and amplitude, through the reasonable center of gravity design and structural strength design, it can maintain a stable working condition and improve the safety of the work. 4. High flexibility: QY75KC crane has independent leg support and articulated telescopic jib structure, which makes it has a strong adaptability, and can be adapted to a variety of different work sites and working conditions. 5. Easy to operate: QY75KC crane is equipped with advanced LCD display, friendly operation interface, full-featured, convenient operation, which is convenient for drivers to carry out various operations.6. High safety: QY75KC crane adopts a number of safety technologies, such as overload protection, limiting the height of lift protection, limiting the angle of rotation protection, etc., which can effectively protect the safety of lifting operations. Overall, XCMG QY75KC crane has the advantages of high efficiency, stability, safety, flexibility, etc. It is suitable for a variety of large-scale engineering construction, transportation, loading and unloading and other occasions that require lifting operations.