In the 50s, he met Felice Zosi at the Plast fair in Milan, with whom he began to work in the field of production and sale of machinery for plastic processing.

[2] This was decisive for the strong development of the company which subsequently began the production of thermoforming (Plastiform srl) and injection (GBF mechanical constructions Spa) machines.

Also in those years, Dino Terragni founded RIAP Spa in Bergamo with the aim of developing new technologies in collaboration with Montedison.

In the years 1972, 1973 Covema achieved great success by opening branches abroad, founding new companies (see above) and managing almost 700 employees with a consolidated turnover of the group around 50 billion lire, becoming at the time one of the most largest in the world for the production of machinery in the plastics sector.

Like most of the successful entrepreneurs of that time, tireless worker, never a holiday with the family if not for a few days, self made man, his disappearance immediately caused the decline of Covema and all the companies in the group.