Hunan Puqi Geologic Exploration Equipment Institute (PQWT), based in Changsha China. we are specialized to researches and development, manufacturing and sales of: �ground water detector, �Mine locator, �Pipe leak detector, �Underground metal, �Metal pipeline detector, �V4 archaeological detector �and X-ray security inspection equipment. PQWT has over 15 years of experience and focuses on Hydro geological exploration, Intelligent data-capture technology and Application of special technique, carrying out Scientific research, technical services and Marketing application business. More than 200 staffs, including 16 senior engineer, 49 intermediate engineer. we established long-term cooperation relationship with many scientific research institutes in Germany, US, Australia, Hong Kong and other countries, which brings great success to our products all over the world.