Hello, you said that the screen changer , we produce is suitable for all kinds of resin filter use, such as plastic sheet, film industry, granulation industry, and so on, coupled with rapid hydraulic station, can realize the rapid network changer. Plate-type belt-type and column-type, in recent years there are new structures in China, rotary mesh changer, but the price is higher, the general domestic enterprises have not yet used. The mesh screen changer is installed in front of the melt pump at