(관세) 세밀한 분석

 

 

 

https://www.youtube.com/watch?v=mb4rwSSK2ZE&ab_channel=%EB%B0%95%EC%A2%85%ED%9B%88%EC%9D%98%EC%A7%80%EC%8B%9D%ED%95%9C%EB%B0%A9