The HSGK series is specially used for scissor-type aerial work platforms. It has the characteristics of compact structure, easy installation and high safety. The HSGK valve interlocks the lifting function with the walking function to improve the safety of use; the flow distribution of steering and walking is controlled by a constant pressure differential valve, so that the whole vehicle has good movement coordination; the integrated adjustable balance valve overcomes the difficulty of starting after parking on a slope.