The mortgage loan contract for house purchase is signed with the bank that signed the contract with the developer. Before applying for a mortgage, you must first sign the "Commercial Housing Sales Contract" with the developer, and then go to the bank to sign this contract. If the bank approves, the bank can transfer your loan directly to the developer. The "Personal House Purchase Mortgage Contract" is a legal document that restricts you to repay the loan on time by the bank to prevent the loan from being recovered in case of default.