Delna was founded on February 3th 1971 with the contribution of some entrepreneurs oriented to find a solution to the ecological problems of the surface treatment with chemical pickling. The company rising on a surface of more than 150 thousand square meters in Brivio (Lecco) built a plant suitable for the new requirements and equipped with the most sophisticated ecological devices. The production more and more growing year by year reached 1.200.000 ton. A technological development allowed the company to get a high quality standard, taking always care of the environment, to satisfy the market requirements with on time discretion.