As the initiator of new screen changer in China, We are specialized in the research and manufacturing of melt filtration device for more than 20 years. With strong scientific research team and mature technology; hold many international and national invention patents.
1. Plate screen changer, high-pressure, high wear-proof, no material leakage, no change of surface clearance.
2. Dual-column screen changer, dual channels for filtration, no need to stop the working machine when changing the screen, no production interrupt.
3. Mesh belt screen changer, automatical and continuous screen replacement without manual operation, no fluctuation of material flow.
4. Backflush screen changer, initiative internationally, advanced technology, high production and high efficiency, screen washing online available, no production interrupt, suitable for high-end equipment production of high output and large filtering area.
5. Continuous screen changer, ensure the screen changing without machine halt or production interrupt, especially applicable to foaming plate products such as XPS, EPS, EPE and cast film.
Widely used for
1. Extruders (Plastic Extruder, Cast Film, Blown Film Extruder, etc)
2. Plastic pipe production line
3. Pipe and PVC sheet extrusion lines
4. Pelletizer,Granulation, Non-woven, Plastic recycling and Monofilament machine

Our items can not only filter impurities, but also can greatly improve the plasticizing and homogenization effect of the raw material, make the product structure more homogeneous and product surface smoothness and quality much better, energy-saving and consumption-reducing, output- increasing and labor-saving.

During these years, DEAO has gained a lot of certificates. Like DEAO has been appraised as a high-tech enterprise, Zhengzhou Pilot Project of Patent Company as well as a Key Service Institution, Science and Technology Innovation Project and Key Technology R&D Program in Henan Province. Meanwhile we are ISO9001:2000 certified.

All the patterns of screen changers ranging from double-piston, dual-column, new sealed compensation, new continuous, the plate, automatic mesh belt to new pulse backflush style can ensure replacing the screen without stopping the machine.
Our items have features such as no material leakage, simple operation, productivity improving and energy saving, applied to variety of raw materials.
DEAO aims at the motivation of scientific and technological innovation, strives for excellence, good faith and services for clients with heart and soul.