You might say that Sumitomo Electric Industries (SEI) produces the wide world of wire. The company, which has more than 320 subsidiaries and affiliates around the globe, is Japan's largest producer of wire and cable. SEI's automotive segment, about half of sales, makes automotive wiring harnesses, wires, wheel speed sensors, and dash boards. Next in sales is the electric wire and cable division, which makes power and industrial cables, as well as magnetic and hybrid products. Other units produce optical fiber cables, fiber-optic components, industrial cables, printed circuits, ultrafine wire, and semiconductors. SEI was formed in 1897 as Sumitomo Copper Rolling Works.