Because of the furnace temperature swing fairly quickly. Keep the temperature in trough conveyors, it could adjust glass resulted in the glass in the gutter with the temperature.
Caused by fluctuations in temperature furnace rather quickly. The temperature of the glass conveyor trough of the time so the glass in the body temperature are not equal.
Caused by fluctuation temperature furnace at relatively quickly. The temperature in the trough conveyor ปรับตัวไม่ทัน glass the glass in the rail temperature not only.