Until now, studies on the environmental effect of foreign investment opening (FIO) in service sector are still blank. Actually, development of service sector is significant force for promoting economic modernization for the countries, thus development of service sector is extremely significant...

Importing is an important method to connect the domestic market with international market. By importing energy resources to replace parts of domestic production, a country’s energy pressure has been alleviated to a certain extent, but does importing really improve a country’s energy...