SuperAirTM ---Radiation heating plays a main role during glass heating, while larger volume of compressed air is blown into heating furnace by intelligent pipe convection system. Therefore, both on-line and off-line low-e glass can be evenly heated. LD-AC SuperAir F&B bi-directional tempering furnace adopts SuperAir heating technology and they both have a flat quenching section and a bending quenching section that lie on both sides of the heating furnace. By loading the glass in different direction, the furnace can temper both flat and bent glass. Glass can be tempered includes: on-line Low-E glass, extra white glass, silk-printed glass, pattern glass, tinted glass, clear glass, etc.