1. If you want to apply for a fertilizer registration certificate, you need to go to the soil and fertilizer station of the local agricultural bureau to get the form. After they take a sample of your fertilizer, they will do a field fertilizer effect experiment. How much is the charge? Prices vary from province to city. You can consult the local agricultural bureau's soil and fertilizer station.
2. Urea, diammonium phosphate and compound fertilizer can be exempted from inspection all over the country, but they must go to AQSIQ. No tax exemption certificate is required for organic fertilizer.
You can go to the local bureau of quality and technical supervision, take samples from your factory and test them according to NY525-2002 organic fertilizer standard. After passing the test, you can go to the tax bureau for fertilizer registration certificate and tax exemption certificate.