There are three grades of business secretary certificate, and the conditions for entering the exam are different, but I have never heard of any grade examination certificate for foreign secretaries. You can apply for the business secretary exam directly. You can check the location online or consult a training institution.
By the way, introduce the difference between a business secretary and a foreign secretary:
Business secretary refers to assisting the boss to handle all kinds of business affairs. According to his professional knowledge and practical experience, he is responsible for drafting contracts, contacting customers, sending and receiving letters and telegrams, participating in business visits, business negotiations, business negotiations and business decisions, sorting out clues, analyzing advantages and disadvantages, providing opinions, implementing plans, handling specific businesses and so on.
Foreign-related secretaries mainly go to foreign-related government agencies and export-oriented enterprises to engage in secretarial, file management, human resources management and other work. Foreign-related work requires higher language. Foreign-related secretary is an international profession with the characteristics of foreign-related, auxiliary and transactional. In China, foreign-related secretaries refer to secretaries who work in foreign-funded enterprises, foreign institutions in China and foreign-related units and departments in China. They are a new type of export-oriented and compound secretary after the reform and opening up. They can master more than one foreign language, operate office automation equipment, understand economy and law, and master the theory and skills of secretarial work. They are professionals who help their superiors to implement management.