Changsha Tianhe Drilling Tools and Machinery Co., Ltd., established in 2002, located in Changsha City, Hunan Province, China. We are a professional geotechnical drilling manufacturer in research, design, production, sales and management. With more than 300 employees, we focus on advanced technology with 90 specialized technicians we ensure good quality with more than 150 experienced workers we provide our customer the best product and service with our sales team of 50 sales managers.