Computer system design; conducting scientific feasibility studies; consulting in the field of electrical engineering; consulting in the field of electronic engineering; engineering design services; industrial design; industrial research in the field of mechanical engineering, radio frequency (RF) communication devices, thermal energy, and educational exhibitions for the application of math, science and technology; new product design services; rental of laboratory apparatus and instruments; research and development in the field of electronic engineering, electrical engineering, mechanical and electrical engineering, anti-theft equipment engineering, automatic control system engineering, audio-visual equipment engineering, communication system and equipment engineering, central monitoring and control system engineering, instrument control system engineering; research and development of new products for others; scientific laboratory services; scientific research; technical writing; technological consultation in the technology field of mechanical, engineering, radio frequency (RF) communication devices, thermal energy, and educational exhibitions for the application of math, science and technology; technological research in the field of engineering, radio frequency (RF) communication devices, thermal energy, and educational exhibitions for the application of math, science and technology; technology consultation in the field of mechanical and electrical engineering; telecommunications engineering consultancy; telecommunications technology consultancy