Walloon company BTF s.a. has just won a major contract with the city of Vienna. This Villers-le-Bouillet-based business specializes in the construction of different types of industrial furnaces designed for all sectors of industry. BTF also designs and manufactures furnaces for performing fire resistance testing in approved laboratories, for the certification of materials. It's their fire-testing furnaces that are the subject of this contract with the city of Vienna.