HS Codes are defined into 21 Sections around the world, which are divided into 99 Chapters under which thousands of products are further classified. HS commodity code is categorized into 2-digit, 4-digit, 6-digit & 8-digit level. However, in some countries like USA and South Korea, it is further classified up to 10-digit level.
Structure of HS Code - 61091000 for Cotton T-shirts Knitted or Crocheted