What are the basic contents of the internal accounting control system?

The internal accounting control system includes the following basic contents: ① Internal accounting control system for monetary funds; ② Internal accounting control system for physical assets, where physical assets include various inventories, fixed assets, etc., and physical assets are units An important material basis for production and operation; ③ internal accounting control system for external investment; ④ internal accounting control system for engineering projects; ⑤ internal accounting control system for procurement and payment; ⑥ internal accounting control for sales and collection; ⑦ cost and expense Internal Accounting Controls.