2. Water storage irrigation device (national novel and utility model patent, patent number: ZL 03 204923.4);
3. Plastic canal and supporting water measuring device (national patent for new and utility model, patent number: ZL 200520004070);
4. Orifice gate device (national patent for new model and utility model, patent number: ZL 200520004071.5);
5. Storage and separation emitter (national invention patent, patent number: ZL2007 10095938).