관세평가분류원, 「품목분류(HS) 통관애로 집중 신고기간」 운영

When a destination customs authority applies a different HS code than Korea, both the duty rate and the import requirements change with it. For cross-border sellers shipping out of Korea, that shows up as clearance delays and duty bills nobody budgeted for. This filing window pairs a Korean advance ruling with English-language classification reasoning you can actually put in front of the foreign customs office. List the SKUs where an overseas authority has already questioned your code, or where you expect it to. If a product has no Korean advance ruling yet, file both during this window so you hold the ruling letter and the English support material before the next shipment. Composite-material goods and retail sets are the usual flashpoints.