1. Check the purchase invoice: If you buy agricultural machinery, you will receive a purchase invoice. The purchase invoice should contain detailed purchase information, including product name, model, quantity, price, etc. If you don't receive the purchase invoice, you can contact the seller to ask for the invoice to ensure that the purchase is legal.
2. Check the warranty card and certificate: the warranty card and certificate of agricultural machinery are important documents to prove the legality of agricultural machinery. You bought agricultural machinery, you should have received these two documents. You can carefully check the information on the warranty card and certificate to ensure that agricultural machinery and tools are legal.
3. Consult the local agricultural machinery management department: If you are not sure whether the agricultural machinery you bought is legal, you can consult the local agricultural machinery management department. They can help you verify the legality of agricultural machinery and tools and provide corresponding supporting documents.