National Trade Net: beijing、shanghai、shandong、jiangsu、zhejiang、henan、sichuan、jiangxi、anhui、shanxi、xinjiang、guangxi、guangdong、and so on

World Trade Net: Amierica,Canada,Mexico,Switzerland,Spain,Italy,Finland,Jugoslavia,Russia,

WhiteRussia,S.Africa,Kenya,Egypt,Mauritius,Morocco,Tanzania,Australia,

New Zealand,Japan,Korea,Mongolia,Bengal,Thailand,Vietnam,Vakistan,SriLanka,Laos,

Singapore,Malaysia,United Arab Emirates, Saudi Arabia, Kuwait,

Syria, Yemen, Iran and Hongkong ,Taiwan.