First of all, it is recommended that legal affairs and internal control be involved before signing the contract, and be responsible for reviewing the contract from the legal and domestic industrial and commercial level. Is it appropriate? Then the finance department will conduct risk management and control on the contract from a financial perspective, mainly in terms of taxation and other aspects. Internal audits can include regular inspections or irregular spot inspections. Discipline inspection and supervision mainly accept reports from employees or supervise and review other aspects of employee disciplinary violations.