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QY12K型液压汽车起重机是我厂最新研制开发的产品（见题图）。该机吸收国外先进技术，起重作业全部采用液压驱动，具有结构紧凑、操纵方便灵活、动作平稳、微动性好等特点，是一种工作安全可靠，生产效率高的起重设备。1主要性能参数主钩最大额定总起重量（t）12副钩最大额定总
QY12K hydraulic truck crane is the latest research and development of our plant products (see diagram). The machine absorbs advanced foreign technology, lifting operations are all hydraulic drive, with a compact structure, convenient and flexible operation, smooth movements, good and so on a good move, is a safe and reliable, efficient production of lifting equipment. 1 The main performance parameters of the main hook maximum rated total weight (t) 12 hook maximum rated total