42 Design of electronic and optoelectronic apparatus and instruments; optoelectronic integrated circuits design; Engineering services in the field of sensor for optical communications, optical connectivity applications and distance measurements; Industrial analysis and research services in the field of optoelectronics and optical communication, electric, electronic, optoelectronic sensors, switches, detectors, and circuits; Technical consultancy relating to the design of products in the field of optoelectronics and optical communication, electric, electronic, optoelectronic sensors, switches, detectors, and circuits