Shanghai Changji Geological Instrument Co,.Ltd is converted form Shanghai Geology Factory, which was affiliated to Geology and Mine Ministry of China and was a leading factory of Chinese Mechanism Industry. Shanghai Changji corporation is the only transferee of the registered brand-mark and all the leading productions and technologies of Shanghai Geology Factory. Shanghai Changji Geological Instrument Co,.Ltd mainly exploits and produces petroleum analyzing instruments, highway prospecting instruments geological prospecting instruments and other lab instruments. After a few years developing, our company's productions have become  highly intelligentized and widely cover. Our company is one of the companies, which has the most kinds of productions and the largest scale. Our company has abundent of technology and round service. In the new century, we'll enhance the discovery of high-tech productions according to the requirements of clients and the changes of market and try our best to serve for the clients all over the world. We sincerely hope to devote to work for the happiness of humankind and the development of Petroleum Instruments, Highway Instruments and Analyzing Instruments.