监督和管理采购的材料和服务的质量。管理供应商信息。通过供应商提供的材料的质量和时效性来分析供应商的表现。使用此信息可进一步提高生产过程的效率。 Overseeing and managing the quality of the materials and services procured. Manage supplier information. Analyze the performance of the suppliers through the quality and time effectiveness of the materials provided by them. Use this information to further improve the efficiency of the production process.