Gold credit cards must be marked with Platinum. According to the relevant information of the inquiry, holders of international credit card gold cards (must have the word "Gold") or platinum cards (must have the word "Platinum") or unlimited cards (must have the word "Infinite") must provide a copy of the front and back of the credit card in the applicant's name. (The reverse side must be signed by the cardholder in Chinese) and the original credit card statement for the past six months (must be stamped with bank seal). You can directly apply for a five-year multiple-entry visa to South Korea. If any of the conditions are not met, the business cannot be processed.