The difference between traditional trade jobs and new trade jobs

According to Baidu library related information, the differences between traditional trade jobs and new trade jobs are as follows:

1, new trade jobs explain intra-industry trade, while traditional trade jobs explain inter-industry trade;

2, the assumption of new trade jobs is an imperfectly competitive market, while the premise of the traditional trade jobs is a perfectly competitive market;

3, traditional trade jobs are studied from the supply perspective, the new trade jobs also illustrated from the demand perspective;

4, the new trade jobs emphasize the role of differentiated products in the generation of international trade, the traditional trade jobs assume that all products are homogeneous;

5, the new trade jobs introduce economies of scale, the traditional trade jobs assume that the rewards of scale are unchanged.