Sociedad Española de Construcciones Electromecánicas (abbreviated as SECEM), colloquially known as "electro",[1] was a Spanish company in the non-ferrous metals industry that operated between 1917 and 1978.

[Note 1] The SECEM owned an important plant in Cordoba dedicated to copper metallurgy, brass production, manufacture of motors and electric transformers, etc.

The company came to manufacture nearly 40% of all the electrolytic copper produced in Spain,[5] being supplied to a large extent by the material coming from the Rio Tinto-Nerva mining basin.

In spite of this privileged situation, the lack of internal competition meant that the machinery and technology of the Cordovan factory were not modernized, which in the long term would end up causing serious problems for SECEM's economic viability.

[9] The SECEM factory in Cordoba was located to the west of the city, next to the route of the Cordoba-Seville and Cordoba-Malaga railway lines, which allowed its production to be transported by rail.