The generation of boring materials in Estella's eighth grade on June 29, 2009 needs to be traced back to the source, so as to prevent and find boring in advance. Because of suppliers, it is also a way to strengthen the supervision and assessment of suppliers and send people to the factory to supervise the quality and delivery of materials; Because of the customer, we should negotiate with the customer. Signing an agreement with customers before purchasing special materials for them is one of the ways to avoid the sluggishness caused by customers changing or canceling orders. For the dull materials that have been produced, we should try our best to adjust and deal with them and minimize losses. The treatment methods are nothing more than disassembly, modification and reuse, such as shaping and re-electroplating. ; Substitute similar materials without affecting the function, safety and main appearance; Coordinate suppliers to return goods or even discount; Look for opportunities to transfer to other suppliers and customers (there are many companies to help deal with sluggish materials, including barter, profit sharing, consignment and so on. ); It's really bad, and it can be sold as waste.