Q: Why the other data including the business data and GPS data can not be displayed at the same place with the one of the Public Web Map Services?
Generally speaking, the public web map services usually offset after data encryption. Some adopts the special projected coordinate system such as the Google map service. If you want to use this kind of services as the base map, please process these data to be overlaid on the base map firstly. For example, you can encrypt them to get the offset effect based on the base map or convert them to the same projected coordinate system as that of the web map service. The right result will be gotten then.