The differentiated products and intra-product vertical specialization weaken the impact of free trade on employment and economic growth, which is helpful for the free trade policy to be adopted.

• 产品的差异性和产品内垂直分工弱化了自由贸易对贸易国家就业和经济增长的冲击，从而有助于以产业内贸易为主的产业和国家采取自由贸易政策。