The stringer is usually used in the production line of photovoltaic products. It is one of the most important equipments in the production of solar cells. The stringer conveyor belt is made of high-strength glass fiber or Kevlar (aramid) fiber. The surface is coated with imported Teflon (PTFE). It has the advantages of high straightness and flatness, high hole position accuracy, low elongation, small thermal deformation, high temperature resistance and fatigue resistance, long service life, stable belt and good anti-sticking effect.