Semi-conductors; Conductors, electric; Electronic chips for the manufacture of integrated circuits; Laser diodes; Optical sensors; Photovoltaic cells; Semiconductor wafers; Solar batteries; Electronic semi-conductors; Radon detectors

Semi-conductors; Conductors, electric; Electronic chips for the manufacture of integrated circuits; Laser diodes; Optical sensors; Photovoltaic cells; Semiconductor wafers; Solar batteries; Electronic semi-conductors; Radon detectors

Batteries; Laser diodes; Semi-conductors; Semiconductor devices; Smartphones; Surveying instruments; Traffic-light apparatus; Transformers; Electric conductors; Electric sensors; Recorded computer operating software; Semiconductor chips; Sound alarms