For example, when you buy a New Pants, you often have to trim it and cut it to your own length. Why? When garment factories design pants, they are all designed according to the standard body shape. Many people don't fully meet the standard body shape, so they have to cut it. The situation of enterprises is much more complicated than pants. Different industries, different corporate cultures and different management processes make every enterprise necessarily different from "standard enterprises". ERP software is designed according to "standard enterprise" in theory, so every enterprise must have some inconsistencies. This requires necessary customized development and "cutting" inconsistencies according to the actual situation of enterprises.

In fact, in ERP implementation, customized development usually accounts for 40% to 60% of the total cost. Considering customized development, when choosing ERP, you should choose a well-structured ERP software, just like choosing the right version when buying pants. Second, we should choose software that is easy for secondary development. Some software design is too dead, secondary development is difficult, time-consuming and expensive. Especially the ERP software of some small and medium-sized domestic manufacturers, this problem generally exists. Third, we should choose a capable and experienced implementer for secondary development. This is like saying that good pants need a good "tailor" to trim, otherwise good pants will be damaged.

The secondary development of ERP software is simple and efficient, and OpenERP is recommended. OpenERP is an open source software. The software itself is free and can be downloaded at will. Most ERP software is developed in Java language, but OpenERP is developed in Python language. The development efficiency of Python language is 5- 10 times that of Java. So OpenERP is naturally highly productive. In the open source ERP software, OpenERP has rich Chinese materials. There is a Chinese OpenERP forum, in which there is a Chinese introductory book "OpenERP Application and Development Foundation", which can be found by searching in Baidu.