The registered address of kosaid test instrument ltd. Is located at zhuang park, east city street, and is located at zhu jiayang east park, located at zhuong city. The registration authority is known as xu jiayang market supervisory authority, which operates on general items: sale of test machines; construction of test mechanisms; sale of experimental analytical instruments; manufacture of experimental analytical instruments; sale of instrument instruments; manufacture of instrumentation; repair of instrumentation instruments; sale of electronic measuring instruments; manufacture of electronic measuring instruments; manufacture of electronic measuring instruments; sale of pumps and vacuum equipment; manufacture of pumps and vacuum equipment; manufacture of general purpose equipment (other than special equipment); repair of general purpose equipment; sale of electronic specialized equipment; sale of electronic products; maintenance of electronic, mechanical equipment (other than special equipment); development of mechanical equipment; sale of mechanical equipment; sale of mechanical parts, parts and components; processing of hardware products; development of penta gold products; wholesale production of penta gold products; manufacture of hardware; sale of polished oil; export and import of technology; import and export of goods. (in addition to projects subject to authorization under the law, the operation of the business is carried out autonomously under a licence)