Single chiller conventional tempering: By using special variable curvature mechanism and drive device to gradually change the shapes at two ends of the chiller, the glass can start bending as soon as it leaves the oven and forms desired curvature along the length of the glass. In addition to producing gradually bending tempered glass, it can avoid cracking that often occurs when producing single curvature bent tempered glass using traditional approach and meet users’ processing requirement for high-quality bent tempered glass. This method is suitable for processing curved tempered glass with a length less than or equal to 6 meters.