徐工QY70KC起重机(jī)的(dí)优点有(yǒu)：1. 强大的(dí)起重能力：徐工QY70KC起重机(jī)具有(yǒu)70吨的(dí)起重能力，能够(gòu)满足大部分起重需求。2. 灵活性(xìng)好：起重机(jī)采用了全新的(dí)设计理念，具有(yǒu)旋转性(xìng)能和(hé)便携性(xìng)，可在狭小的(dí)工地上进行起重作业。3. 安全性(xìng)高：起重机(jī)配备了先进的(dí)安全系(xì)统，如安全锁、过载保护和(hé)防倾翻(fān)装置，能够(gòu)确保起重作业的(dí)安全性(xìng)。4. 操控方便：起重机(jī)采用了先进的(dí)液压系(xì)统和(hé)电子操控系(xì)统，操纵简单方便，操作者可以轻松掌握。5. 质量可靠：徐工QY70KC起重机(jī)选用高品质的(dí)材料和(hé)部件，经过严格的(dí)质量控制，具有(yǒu)持久性(xìng)和(hé)可靠性(xìng)。6. 维护成本低：起重机(jī)的(dí)设计合理，易于维护和(hé)保养，能够(gòu)减少维修成本和(hé)停机(jī)时间。总之，徐工QY70KC起重机(jī)具有(yǒu)起重能力强大、灵活性(xìng)好、安全性(xìng)高、操控方便、质量可靠和(hé)维护成本低等优点，适用于各种起重作业的(dí)需求。

The advantages of XCMG QY70KC crane are: 1. powerful lifting capacity: XCMG QY70KC crane has a lifting capacity of 70 tons, which is able to meet most of the lifting needs. 2. good flexibility: the crane adopts a new design concept with rotary performance and portability, which can be used for lifting operations in narrow construction sites. 3. high safety: the crane is equipped with advanced safety systems, such as safety lock, overload protection and anti-tipping device, which can ensure the safety of lifting operations.4. Convenient manipulation: The crane adopts advanced hydraulic system and electronic control system, which is simple and convenient to manipulate, and the operator can easily master it.5. Reliable quality: XCMG QY70KC cranes are made of high-quality materials and components, which are subject to stringent quality control, and have durability and reliability.6. Low maintenance cost : The cranes are well-designed and easy to maintain and service, which can reduce the maintenance cost and downtime. In a word, XCMG QY70KC cranes have the advantages of powerful lifting capacity, good flexibility, high safety, easy maneuverability, reliable quality and low maintenance cost, which are suitable for all kinds of lifting operation needs.