Special-shaped cards are non-international standard cards tailored to individual needs. The thickness of the card base is 0.3mm, 0.5mm, 0.6mm and 0.76mm, and the size of the card is also different from that of the conventional card. Personalized patterns or unforgettable pictures can be used on the card cover. Standard credit card is an international uniform size card. However, with the advent of the personalized era, many kinds of strange cards have appeared all over the world. These cards are called abnormal cards. The popular credit card markets in China mainly include Garfield card of Industrial Bank, WOW card of Shanghai Pudong Development Bank, MSN card of China Merchants Bank and so on.