​We welcome our most recent advertiser, GRUPO ETSA of Mexico whose banner ad can be found on the right hand side of this page. Founded in 1979, Especialidades Termicas, S.A (ETSA Group) is one of the two largest commercial heat treaters in the country with 6 locations, Guadalajara, Celaya, Aguascalientes, San Juan del Rio and Mexico City. The company has 350 employees, annual sales close to $20 million USD and a partnership with HEF-France (the salt nitriding people). We’ll give you some more background including the business mix which is 85% automotive/oil components and 15% vacuum tooling. In actual number of furnaces we can say that the company has 6 vacuum furnaces, 4 nitrocarburizing, 20 batch IQ’s, 3 mesh belt lines, 2 large pit carburizers, 4 bell type for annealing and 1 austemper line. While the company is known for a number of reasons they are possibly best known as the largest commercial mesh belt heat treater in Mexico. We will let you in on a bit of a secret-the company will be the only commercial heat treater in Mexico to make our list of the 30 largest commercial heat treats in North America. More details about the company can be found at