What are the requirements for doing business abroad?

Generally, it is enough to apply for a passport abroad, and foreign inviting companies need to provide an invitation letter for visa procedures.

Introduction abroad:

Travel documents International passengers should go through all formalities such as passports, visas and travel documents before going through the flight and exit formalities. Passengers' passports, visas and travel documents should be carried with them and not transported in their luggage. The carrier shall not be responsible for the losses and expenses caused by the incomplete travel documents of passengers. However, the passenger shall be responsible for all losses and expenses incurred by the carrier, including (but not limited to) fines.

Passport:

Passport is a legal document issued by a country to prove the nationality and identity of its citizens when they enter and leave the country and travel or stay abroad. The word Passport means port pass in English. In other words, a passport is a passport for citizens to pass through international ports in various countries. Therefore, some countries in the world usually issue passes instead of passports.