In China, Only 5 factories have been making PVB glass autoclave and PVB glass production line. I find out the professional brands in the world so i know the technology and price of their machines. Our founder make Glass autoclave since 1998 year. It is such a long time. In the early time, we make steel heater autoclave.  it is changed in 2008 year. From 2008 year, we have been making the infrared glass autoclave. We made a great breakthrough because the infrared glass autoclave can save about 35% energy and save 25% time compared to normal steel heater glass autoclave. Because the glass autoclave warm by wave so it is fast not only warm but also cool down the autoclave rapidly.