Professor Wang, what is non-tariff barrier?
Non-tariff barrier is another mean to restrict imports.
Can you give an example?
For example, some countries restrict imports by quantitative restriction.
Why?
This is used to protect local industries or to achieve certain political objectives.
Oh, Are there other means?
Technical barriers are set for imported goods.
This is designed to exclude them from domestic market, isn't it?
Yes, some countries may use some of the unnecessary health rules to exclude foreign food.