电脑销售商的进销存管理系统，可以对商品，客户，供应商进行，查询，修改，更新，删除等操作，也可以进行进货退货等操作，还能够统计-PC vendor inventory management system, for a product, customers, suppliers, query, modify, update, delete and other operations may be performed purchase returns and operations, but also t