AirStreamTM-Radiation heating plays main role during glass heating, while compressed air is injected into heating furnace, in which it brings certain amount of heat onto glass top surfaces and is helpful for even heating online Low-E glass, etc. SuperAirTM-Radiation heating plays main role during glass heating, while larger volume of compressed air is blown into heating furnace by intelligent pipe convection system. Therefore, both online and offline low-e glass can be evenly heated. JetConvectionTM-Convection heating plays main role during glass heating. After being heated in jet convection chamber, the hot air inside heating furnace is blown onto glass surfaces and then goes back to hot air blowers for continuous circulation, which not only ensure even heating, low production costs, but enhance the quality of the end products as well. LD-BB JetConvection & LD-BC JetConvection Double Bent Bi-direction glass tempering furnace. LD-BB Jetconvection & LD-BC JetConvection Double-Bending Bi-Directional glass tempering furnace adopt JetConvection heating technology and they both have two bending quenching sections that lie on both sides of the heating furnace. By loading the glass in different direction, the furnace can temper different radius bent glass. Glass can be tempered includes: on-line and off-line Low-E (E=0.02) glass, extra white glass, silk-printed glass, pattern glass, tinted glass, clear glass, etc.