In the modern society, the efficiency competition of a corporation is the quotation of the management level, and science and technology and the actions of discarding and boldly get rid of old inefficient equipment is policy maker's wise choices.DS-YY26 hydraulic rock drill is a new generation drilling equipment of our factory. It takes us more than 18 years to have careful development. It has obtained the honors of "National Key New Product" and "Technical department Innovation Fund".A lot of patented technology makes this product has many outstanding features,...