Tax bureau, bank, post office, supermarket. Quota invoice can be bought in many places in Wu Hanyou, such as tax bureaus, banks, post offices and supermarkets. The tax bureau is the most important point of sale, so you can go to the tax bureau to buy it. It can also be purchased through some third-party platforms, such as electronic invoice platforms and billing companies. It should be noted that the purchase of quota invoice requires the provision of corresponding certification materials and identification.