MEXFOSERV

Optical couplers; Optical fibers; Optical fibers sold as a component of fiber optical cables; Optical fibres; Optical frequency metrology devices; Cables for electrical and optical signal transmission systems; Calibration devices for calibrating optical emission spectrometers; Fiber optic cables; Fiber optic connectors; Fibre optic cables; Fibre optic couplings; Fibre-optic cables