Management information system designs business process, E-R, organizational structure and module structure.

Step 1: (Sales Department) take orders → sign contracts → submit contracts to Finance Department for accounting → issue production tasks → Step 2: (Planning Material Control Department and Inspection Department) prepare production plans → purchase plans → issue production scheduling plans → warehousing and picking → inspection → warehousing and delivery Step 3: (Production Department, Inspection department) picking materials → completing production according to production schedule → inspection → finished product warehousing Step 4: (Sales department) issues finished product delivery task to finance department → financial audit checks whether there are overdue accounts receivable: → (customers have no overdue accounts receivable) sends delivery notice to finished product warehouse → prints delivery note and delivers it to finished product warehouse → guards release it → (customers have overdue accounts receivable) restricts delivery, or sends delivery notice to finished product warehouse after submitting special approval documents from the President.