国与国之间在进行贸易往来的时候,每个国家都希望保护本国的国民经济。如果本国有某种行业在与外国的竞争中处于劣势,那么就要采取措施阻止外国产品进入,对外国产品进入设置障碍,提高它的成本。高关税曾是各国对本国产业进行保护的法宝,但随着自由贸易谈判的不断完善,在当今大? While conducting trade between countries, each country wants to protect its own national economy. If a certain country in the country is at a disadvantage in its competition with foreign countries, measures should be taken to stop the entry of foreign products, to set barriers to the entry of foreign products and to increase its costs. High tariffs were the magic weapon for all countries to protect their industries. However, with the constant improvement of free trade negotiations,