Plan again! You plan how to make the workshop manager complain: or be busy dying: the manufacturing department fires every day!! Not enough capacity! Not enough manpower! The material is urgent!! Customer urges goods!! Or idle to death: equipment idle, workers on holiday! Production stop line! Along with market competition is intense, plant varieties, batch shrinking production plan not only should take the market demand and customer personalized requirements to determine, but also in accordance with the actual ability and the enterprise manufacturing resources dynamic change to adjust the production schedule of inventory, process optimization and monitoring become improve enterprise core competitiveness inevitable link How to do requirements management, obtain more accurate predictions? How to make master production plan to meet inaccurate forecast and changing customer demand? How to schedule and adjust the main production schedule when the internal capability changes? How to properly arrange the progress, not only ensure the realization of the production target, but also ensure the production order and the relative stability of the production line?