Ningbo Zhedong Geologic Equipment Manufacturing Co., LTD. is affiliated with Zhejiang Institute of Hydrogeology and Engineering Geology, which is an executive member of the council of Geological Mining Equipment Branch of China Mining Association. It is a state-owned enterprise, which has more than fifty years history, also the professional production sales of geological equipment. Our company was established in the 1960s, which engages in processing, manufacturing and selling an extensive range of drilling tools and drilling equipments with 10 major categories and more than 400 specifications. Except with abundant experience in drill machine tools, it offers practical and effective advices on core drilling accessories for customers. Since the 1990s, drill stems have become its major products.