VAT NO generally refers to the VAT invoice number, which is generally a total of 8 digits. In foreign trade transactions, often encounter customers asking for a VAT NO number, which is also very important for the customs clearance and registration of goods, once the VAT NO number error may not be able to enter the customs items will be returned. At this time, VAT NO is the tax number. In foreign countries, if the company is registered in the VAT OFFICE, it will give a value-added number to the foreign trade enterprise, and the enterprise will pay tax through this number. At present, many places in foreign countries need to show the VAT NO number on the invoice. When filling in the waybill and invoice, the tax number registered locally of the enterprise must be indicated on the waybill and invoice. Usually the Internet can be used to search the tax number. In addition, VAT Code refers to the category code of VAT invoices, which is generally 10 digits; the 10-digit code means 1-4 for each province; 5-6 for the plate-making year; 7 for printing batches; 8 for the invoice category, the free text invoice is represented by "6", 9 representatives of several versions, the two-part version is represented by "5"; and 10 represents the amount version number. General value-added tax is a kind of transfer tax levied on the new value or added value of goods in the production, circulation and sale of goods. In foreign countries, customers need this VAT NO to pay taxes, which is the reason why the customer needs foreign trade enterprises to provide VAT NO. Otherwise they can’t handle the goods.