Gas cooking ovens; electric cooking ovens; gas deck ovens; electric deck ovens; cooking tunnels; gas conveyor ovens; electric conveyor ovens; electric kilns for porcelain, gres, ceramic, glass and lava stone firing and for fusing, curving and decorating glass; static electric tunnel that cooks directly on stone; gas conveyor stone ovens, that cooks directly on stone; electric conveyor ovens, that cook directly on stone