Contract Lock is an electronic contract signing cloud platform, which mainly provides electronic contracts for B-end customers. The provided electronic contracts have the same legal effect as paper contracts. The general process of signing a contract on the platform is as follows: the contract sponsor uploads the contract file to be signed, and the file will enter the database of "contract lock" and be stored in encrypted form; After selecting the sending object, you will be reminded by SMS, WeChat, etc. With the link. After clicking the link, the signer can complete the signing operation with his mobile phone or directly use the "Contract Lock" App to complete the process.