Material flow is the movement of raw materials, components, work-in-progress items, and finished goods through the entire supply chain, from suppliers to production facilities and ultimately to customers. Efficient material flow is essential to maintain continuous production, prevent bottlenecks, and ensure timely order fulfillment. It involves optimizing transportation routes, storage layouts, and inventory replenishment schedules while monitoring throughput and lead times. Material flow management also reduces operational costs, minimizes delays, and enhances overall supply chain responsiveness, making it a critical component of modern logistics systems. 

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