There is little difference between the credit cards of Bank of Communications, such as Puka and Gold Card. Generally, 2000-50000,50000 is the highest credit limit that Puka and Gold Card can have. If it is higher, you need to apply for a platinum card. If you apply for a credit card, the credit card limit is given by the bank according to the comprehensive score of the information submitted by the applicant. Reference items include age, gender, unit, income, position, housing, education, marriage, real estate, professional title, credit record and so on. After comprehensive evaluation, the credit limit is approved according to the score, and it will take some time to apply for credit limit adjustment after issuing the card.