Sunward Intelligent developed the rotary excavating series products with the most complete spectrums in China, with power head output torque ranging from 40KN to 420KN.M and construction bore diameter ranging from 350MM to 3,000MM. Its theoretical system has formed the only two monographs in this professional industry, namely Research and Design of Rotary Drilling Machine and Rotary Drilling Machine, Construction and Management.Committed to the field of underground works construction