The modern society, the corporation's efficiency competition is the quotation of the management level and the science and technology. Dare to discard, boldly out of the old inefficient equipment is policy-maker's wise choice! The YY28&HD30 hydraulic rock drill is a new generation drilling equipments of our factory ,which takes more than 20 year careful development. And Obtained the "National Key New Product Of China" and "Technical department Innovation Fund Of China". A number of patented technology makes this product has many outstanding features: small original driving force, fast speed, stability control, low noise,simple,reliable, easy maintenance, flexible and mobile etc. Nowadays,YY28 has been accepted and widely used in many departments such as the highway and railway tunnel, the electricity and hydraulic projects, the building materials and quarrying department etc.And the users define YY28 as the "Drilling and Blasting ideal construction equipment", "the traditional Pneumatic rock drill best alternatives".And Scholars & Experts identify it as "the realization of a high efficience, energy efficiency, noise reduction, security, environmental protection, and significant, far better than pneumatic rock drill to reach the international advanced level," Because of YY28's stable,reliable, economical, durable and easy maintenance ,it's most popular with drillman". Practice shows that YY28 is much better compared with the traditional one. With less than 1/3 of its energy consumption and double work efficiency and a comprehensive economic efficiency can increase 3-5 times. "Each component creates the wealth for the construction, the complete equipment makes the gospel for the drillman" is our tenet .We would like to sincerely cooperate with you to create magnificently!