Product description The production techniques of pvc windowsill board production line are: mix material extruding by taper twin-screw-mould-vacuum calibration-cooling-revising-hauling off-cutting-unloading-covering film.The width of the producer is 500-1000mm, thickness is 20-40mm.The surface is flat and smooth. It is very beautiful after covering the film. It is an ideal decoration material. Our company specializes in producing plastic machinery and plastic products. We have rich experience on design, manufacture, testing and operation. We supply you the direction for producing your products and perfect after-service to ensure that the customer can produce excellent products.