Coupon can reduce the price of products, and it is a common commercial promotion tool for consumers. Coupons can be printed on the inserts of magazines, attached to newspapers, pasted on the packaging of products, put in shops for people to get, and sometimes even sent to the street for distribution.

China Agricultural Bank is the abbreviation of China Agricultural Bank, and China Agricultural Bank was formerly known as Agricultural Cooperative Bank. This bank is the first professional bank and state-owned commercial bank established in the new China period, and it is also an important part of China's financial system, which is directly managed by the central government.