Description In business since 1949, Ryosan distributes semiconductors, as well as electronic components, IT products, and semiconductor fabrication equipment, on behalf of companies including Elpida Memory, Macronix International, NXP, and Renesas Electronics. Semiconductors and electronic components, such as condensers and transformers, make up the bulk of company revenues. The company also manufactures heat sinks and other products of its own design. Ryosan gets a majority of its sales from Asian markets.