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Equipment, instruments, and passive and active components for optical and electrical network technology, namely, wavelength division multiplexers and demultiplexers, optical fiber amplifiers, optical communication lasers, laser diodes and light-emitting diodes, optical receivers; computer software for controlling and surveying data transmission networks, namely data transmission network management software; computer software for controlling and surveying or remote-controlling and remote-surveying wavelength division multiplexers and demultiplexers, optical fiber amplifiers, lasers, laser diodes, light emitting diodes, and optical receivers; Also, computer hardware, router hardware, and software including hardware operating systems