1.对原材料库存量及成品库存量控制，制定采购定单和内部生产计划。 Controlling safety stock indicate for raw materials and finished product , make purchase order and internal production planning。 2.管理供应商及联系客户。Manage suppliers and contact customers . 3.评价供应商及确保交付及时率目标实现。Evaluation suppliers and ensure logistic service rate realization 4.控制原材料安全库存量及成品安全库存量。Controlling safety stock indicate for raw materials and finished product 5.及时提供库存信息，为生产和销售服务。 　Provide stock and delivery information. 6.定单及交货跟踪。 Purchase order