By improving the "forecast + reserve" plan management and control model, Shacman has built a digital demand platform covering sales, production and supply chain. Through rolling forecasts and the customer "advance order" mechanism, the company achieves accurate transmission of demand for the next three months. Meanwhile, it promotes in-depth improvement of the parts delivery guarantee system on the supply chain side: it clarifies resource quantity-period and production cycle according to product pool configuration, formulates guaranteed strategies by category, and enhances the accuracy and resilience of the supply chain. On the production side, it steadily advances the "8+3" production scheduling model, which effectively improves the predictability and stability of production organization, strengthens procurement collaboration and material guarantee, and provides strong support for rapid order response and on-time delivery.