Catering contract refers to the contract signed in the catering industry, which is usually applicable to the sale and lease of catering. It is a catering contract, and the contract deposit is the amount guarantee concluded by the parties to the catering contract in order to ensure that their rights are not infringed.

Margin refers to all kinds of deposits of margin nature that are used to account for deposits in banks and other financial institutions. The parties may agree that one party shall pay a deposit to the other party as a guarantee for the creditor's rights, and the deposit contract shall be established when the deposit is actually paid.