Tandem Welding Belt is used in solar silicon wafer automatic tandem welding machine.Most of the domestic large-scale solar battery manufacturers are imported from Europe advanced automatic welding machine series, while tandem welding machine belt is one of the vulnerable part. Cooperated with large domestic solar cell manufacturers, we have successfully developed solar wafer automatic welder series special punch Teflon conveyor belt, with the straightness and flatness high, hole position accuracy, low elongation, small thermal deformation, high temperature resistance and anti fatigue properties.