At the last, a E-C system is designed with the developing model to explain how to use the model. 最后，用这一开发模型设计了一个电子商务应用系统来对模型使用加以详细说明。
Shenzhen, a model of the design Limited specializes in the production of all types of building model design, is the most creative one of the model. 深圳市联创模型设计有限公司专业从事各类建筑模型设计制作，是国内最具创造力的模型公司之一。
