Telecommunications Technology Development Co. Ltd.

Manufacture, sale of metering devices (pressure and pressure sensors) (operated under a licence for a period of time); development, production, sale and technical services of electrical equipment, petroleum instrumentation, drilling equipment; processing of sensitive equipment, electronic devices, electronics, compressors, experimental devices, instrumentation instruments, sensors, sensor safety protection, glass machines. (Projects subject to legal approval may not operate without the approval of the relevant department)