Series GBO-B is a double deck serial glass bending furnace with multiple heating stations. It is a double deck design. The furnaces are composed of several stations. Upper stations are usually for glass pre-heating, heating and bending. Lower stations are for annealing and cooling. Glass is pre-heated, bent, annealed and finally cooled. There are wagons moving around inside the doubled deck structure step by step. Bending moulds are put on wagons. Wagons bring bending moulds and glass in and out of the glass ovens.