What's the difference between Northwest Institute and West Exploration Institute?

There is no difference between the Northwest Institute and the Western Exploration Institute. Northwest Survey and Design Institute, referred to as West Survey Institute, Northwest Institute or Northwest Hydropower, is called China Power Construction Group Northwest Survey and Design Institute Co., Ltd., and there is no difference between Northwest Institute and West Survey Institute. Northwest Survey and Design Institute, referred to as West Survey Institute, Northwest Institute or Northwest Hydropower, is called China Power Construction Group Northwest Survey and Design Institute Co., Ltd..