Our company since its inception, always regards product quality as enterprise life, continuously improve production technology, improve product quality and continuously strengthen enterprise total quality management, in strict accordance with the national standard ISO 9001:2000 for 3 Inch Diamond Core Bit, Full Hydraulic Water Well Drilling Rig, Dual Rotary Drill Rig, Boring Head Mt2,Rock Boring Machine. Trust us and you will gain more. Please feel free to contact us for more information, we assure you of our best attention at all times. The product will supply to all over the world, such as Europe, America, Australia,Costa Rica, Norwegian,Suriname, Angola.our qualify products have good reputation from the world as its most competive price and our most advantage of after-sale service to the clients.we hope we can provide a safe, environmental products and super service to our clients from all of the world and establish strategic partnership with them by our professional standards and unremitting efforts.