As shown in the figure above, the relevant departments put forward the material purchase demand and submit the purchase requisition to the purchasing department. The warehousing department fills in the monthly inventory, safety stock form and purchase requisition. The purchasing department collects the purchase requisition of relevant departments, summarizes the purchase demand of relevant departments, determines the purchase demand according to the annual purchase plan breakdown information, monthly production and sales, and prepares the monthly purchase budget. The finance department reviews the monthly procurement budget according to the annual procurement budget and relevant systems. The purchasing department shall draw up the monthly purchasing plan and submit it to the purchasing manager and general manager for approval before implementation.<br>
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