对供应商维护实现两级分类，类的顺序可进行调整。

·对供应商库的维护，包括增加类、修改类、删除类；增加供应商、修改供应商、删除供应商等。

·六个自定义字段和六个自定义属性，方便扩展和自定义。

·支持自动记忆最近使用输入数据的功能，避免每次输入相同的数据。

-Suppliers to achieve the maintenance of two categories, type of order can be adjusted. Supplier database maintenance, including type, modify categories, delete categories　increase suppliers, suppliers to amend, delete and other suppliers. Custom Field Six and six custom attributes to facilitate expansion and custom. Recently used to support the automatic memory function of the input data to avoid the importation of the same data each time.