沃尔华GNQY-C12起重机的优点有：1. 产能高：该起重机具有较强的承载能力和高速度操作，能够快速完成吊装工作，提高工作效率。2. 灵活性好：该起重机具有360度旋转平台和伸缩式臂架，能够灵活适应各种工作环境和场地的需求。3. 操控简便：起重机搭载先进的液压操控系统，操作简便，指令响应迅速，提供操作员更好的操控体验。4. 稳定性高：该起重机具有稳定的底盘和自平衡系统，能够在不平坦的地面上保持稳定，确保吊装过程安全可靠。5. 安全性好：起重机配备了完善的安全系统，包括起重限位、故障保护和过载保护等功能，能够保障吊装作业安全进行。6. 维护方便：起重机的结构简单，易于维修和保养，减少了维修成本和停工时间。7. 节能环保：起重机采用先进的液压系统和动力系统，具有较低的油耗和噪音水平，符合环保要求。

Advantages of Volvo GNQY-C12 crane include: 1. high productivity: the crane has strong load carrying capacity and high speed operation, which can quickly complete the lifting work and improve the work efficiency. 2. good flexibility: the crane has a 360-degree rotating platform and telescopic boom, which can be flexibly adapted to the needs of various working environments and venues. 3. easy operation: the crane is equipped with an advanced hydraulic control system, which is easy to operate and provides operators with a better control experience. 4. high stability: the crane has a stable chassis and self-balancing system, which can ensure stability on uneven ground. The crane is equipped with advanced hydraulic control system, which is easy to operate and responds quickly to commands, providing operators with a better control experience. 4. high stability: the crane has a stable chassis and self-balancing system, which can maintain stability on uneven ground and ensure the lifting process is safe and reliable. 5. good safety: the crane is equipped with a complete safety system, including lifting limit, fault protection and overload protection, etc., which can ensure the safe conduct of lifting operations. 6. easy maintenance: the crane has a 360 degree rotating platform and telescopic boom, which can flexibly adapt to the needs of various working environments and sites. Convenient maintenance: the crane's simple structure makes it easy to repair and maintain, reducing maintenance costs and downtime.7. Energy-saving and environmentally friendly: the crane adopts an advanced hydraulic system and power system, with low fuel consumption and noise level, in line with environmental requirements.