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Yamaichi Electronics Co Ltd manufactures and sells test, connector, and optical-related products. The Test Solution products include burn-in sockets, test sockets, probe pins, probe cards, and semiconductor test-related services. The Connector Solution products contains card connectors, IC sockets for mounting, high speed transmission connectors, solar cell modules, and YFLEX, a high-speed transmission cable and mounting board. The Optical-Related products include ultraviolet cut filters, dichroic and fluorescence dichroic filter mirrors, band pass filters, and semiconductor laser light sources.