42 Science and technology services; consultancy services in the field of technological development; research and development of new products for others; scientific research in the field of electricity; engineering services; electrical engineering; engineering design services; engineering services in the field of signal cables for IT, AV and telecommunication, and of audio cables, coaxial cables, connection cables, data cables, earth cables, electric cables, electronic cables, ethernet cables, microphone cables, power cables, video cables; engineering services in the field of optical cables, fibre optic cables; engineering services in the field of cable connectors, coaxial connectors, adapter plugs, electric couplings, electric plugs, electrical connectors, plug adaptors, plug connectors, power connectors, cable connectors; engineering services in the field of optical connectors, optical fiber connectors; engineering services in the field of computer networking and data communications equipment, amplifiers, analog-to digital converters, digital signal processors; engineering services in the field of power controllers, electric switches, electrical connection boxes, multi-outlet socket blocks, power distributing boxes, electricity meters, electric control devices for energy management, electrical controlling devices; testing, authentication and quality control; product quality testing services; testing of apparatus in the field of electrical engineering; testing the functionality of apparatus and instruments; testing services in the field of electricity; testing of signal cables for IT, AV and telecommunication, and of audio cables, coaxial cables, connection cables, data cables, earth cables, electric cables, electronic cables, ethernet cables, microphone cables, power cables, video cables; testing of optical cables, fibre optic cables; testing of cable connectors, coaxial connectors, adapter plugs, electric couplings, electric plugs, electrical connectors, plug adaptors, plug connectors, power connectors, cable connectors; testing of optical connectors, optical fiber connectors; testing of computer networking and data communications equipment, amplifiers, analog-to-digital converters, digital signal processors; testing of power controllers, electric switches, electrical connection boxes, multi-outlet socket blocks, power distributing boxes, electricity meters, electric control devices for energy management, electrical controlling devices; design services; designing of electrical systems; industrial design.