徐(xú)工QY70KD起重机有以下优点：1. 高承载能力：徐(xú)工QY70KD起重机具有70吨的(dí)最大起重能力，可以满足大部分起重作业的(dí)需求。2. 灵活性强：该起重机的(dí)转台和支腿具有360度旋转能力，可以实现全方位的(dí)起重作业，适应各种工况和使用(yòng)环境。3. 操作简便：徐(xú)工QY70KD起重机采用(yòng)新一代液压变量技术，操作更加简单、灵活，能够精确控制(zhì)起重机的(dí)动作。4. 安全可靠：该起重机配备了多种安全装置，包括过载保护(hù)、防倾翻装置等，确保起重作业的(dí)安全。5. 能效高：徐(xú)工QY70KD起重机采用(yòng)先进的(dí)液压系统和电子控制(zhì)系统，能有效提高能效，减少能源消耗。6. 维(wéi)护(hù)便捷：该起重机的(dí)零部件采用(yòng)模块化设计，易于维(wéi)修和更换，降低了维(wéi)护(hù)成本。总的(dí)来说，徐(xú)工QY70KD起重机具有承载能力强、灵活性高、操作简便、安全可靠、能效高以及维(wéi)护(hù)便捷的(dí)优点，适用(yòng)于各种起重作业需求。

XCMG QY70KD crane has the following advantages: 1. high load capacity: XCMG QY70KD crane has a maximum lifting capacity of 70 tons, which can meet most of the lifting operations. 2. flexible: the crane's turntable and outriggers have a 360-degree rotating capacity, which can realize all-around lifting operations and adapt to a variety of working conditions and use of the environment. 3. easy to operate: XCMG QY70KD crane adopts a new generation of hydraulic variable technology, the operation is more simple, flexible, and can accurately control the movement of the crane. 4. safe and reliable: the crane is equipped with a variety of safety devices, including overload protection, anti-tipping device, etc., to ensure the safety of lifting operations. 5. high energy-efficiency: XCMG QY70KD crane adopts an advanced hydraulic system and electronic control system, which effectively improves the energy efficiency and reduces energy consumption. 6. and reduce energy consumption.6. Convenient maintenance: the crane's parts adopt modular design, which is easy to repair and replace and reduces the maintenance cost. Overall, XCMG QY70KD crane has the advantages of strong carrying capacity, high flexibility, easy operation, safety and reliability, high energy efficiency and convenient maintenance, which is suitable for all kinds of lifting operations.