CHOTEST is not only a software company but also a national high-tech enterprise integrating research, development, production and sales, which is specialized in designing and producing precision measurement instruments and calibration instruments. Since its establishment, the company always adheres to technological innovation principle as the development basis. With more than ten years development, the company has accumulated abundant practical experience and established a strong professional technical team of light, machine, electricity and information technology. At present, the company has a number of technology patents and software intellectual property rights.The company has 2,000 square meters of modern office well equipped with advanced research facilities. In addition, it owns 5,000 square meters of precision machining and assembly factory. All products are manufactured in accordance with ISO9001 standard. The company is always living up to the motto that is providing our customers with top quality products.With intensive studying on length and pressure test technology for more than a decade, a special image processing technology with CCD camera is developed. At the same time, multiple products have been launched, such as SJ2000 / 3000 series automated dial indicator testing machines, SJ5200 series universal thread measuring machines, SJ6000 laser interferometer measurement system, SJ5100 series universal length measuring machines, SJ5700 series contour measuring instruments, SJ2200 series micro-angle calibrator, SJ2300 series verticality testing instrument, SJ200 series precision height measuring instruments, ZT5000/6000 series automated pressure calibrators. The company promotes the upgrading of Equipment Technology in geometric domain in China.At present, the company has dozens of self-developed products with new technology, widely used in government Metrology and Quality Inspection agencies, international military, automotive, aerospace, machinery, metal