Ravarini Castoldi was founded in Milan in 1867, and began producing electrostatic equipment under the ELETTROSPRAY trademark starting in 1962. The first unit was entirely manufactured in Italy. It was a manual electrostatic device equipped with a rotating bell. Ravarini Castoldi has kept pace with industry development by adopting new technologies and expanding production, extending the application of electrostatic principles to fields similar to industrial coating, such as the food industry and steel mills. Over the years, Ravarini Castoldi has accumulated numerous patents for advanced equipment. Due to diligent work in research and development, electrostatic applications for many different products frequently adopt new methods. In 1986, Ravarini Castoldi produced the first electrostatic oiling machine at the request of an Italian customer, installing it on their pickling line. As the performance and ease of maintenance of the first machine proved highly successful, additional units were supplied to the industry. Ravarini Castoldi became increasingly involved in providing electrostatic oiling machines for cold rolling mills and the aluminum industry, covering the following types of production lines: pickling lines, cold milling lines, slitting lines, cut-to-length lines, continuous annealing lines, galvanizing lines, inspection lines, recoil lines, coating lines, and tinplate lines. Later, demand for Ravarini Castoldi electrostatic oiling machines and engineering quality grew significantly, as evidenced by recent successes worldwide. Today, Ravarini Castoldi is proud to offer one of the widest ranges of electrostatic equipment in the world.