Glass pultrusion struts, also known as l-shaped strips, drawing strips, venting strips, etc., are made of non-alkali glass fiber impregnated thermosetting resin by a pultrusion process, which has high mechanical strength, excellent electrical properties, and flame retardant. Corrosion resistance, arc resistance and other advantages. Mainly used for dry-type transformer interlayer ventilation and cooling, reactor and wave blocker.