[1]International Business Faculty;
Beijing Normal University;
Zhuhai;
Guangdong;
519085;
China;
[1]International Business Faculty;
Beijing Normal University;
Zhuhai;
Guangdong;
519085;
China;
[1]International Business Faculty;
Beijing Normal University;
Zhuhai;
Guangdong;
519085;
China;
Green trade barrier; Japanese positive list system; Frozen vegetable export; Gravity model; Agricultural product trade;