Expansion of intra-regional trade in east Asia 并列题名：Expansion of intra-regional trade in east Asia Research on the development of intra-regional trade in esat Asia 并列题名：Research on the development of intra-regional trade in esat Asia Expansion of international society financial integration in east asia law of international trade in practice Integration of trade in east asia Review of international trade in services 并列题名：Integration of trade in east asia