On Sino-US economic and trade friction On sino-us intra-industry trade and trade friction Report on China-CEEC economic and trade cooperation Political economics analysis of trade friction 并列题名：Political economics analysis of trade friction Reports on China-ASEAN economic and trade cooperation Introduction to Sino-Russian economic and trade cooperation Issue by the state economic and trade commission Development of China-Africa economic and trade relations Co-opetition in China-Asean economic and trade relationship