Why choose coto technology? Coto Technology is the worldwide leader of small signal switching products sold into the Automatic Test Equipment, Data Acquisition, Instrumentation, Process Control, Telecommunications, Medical and Security markets. Our Classic line of Relays & Switches contains a wide range of form and function. And all of our products are 100% tested!Where are coto products made? Located in Mexicali, Mexico, Coto’s manufacturing facility offers a full range of comprehensive services.Why choose cotto tiles? Over the years, COTTO has become more and more established as a world-class manufacturer of tiles and sanitary ware.