HSN Code 4503 refers to "Articles of natural cork (excluding cork in square or rectangular blocks, plates, sheets or strips; sharp-edged blanks for corks or stoppers; footware and parts thereof; insoles, whether or not removable; headgear and parts thereof; plugs and dividers for shotgun cartridges; toys, games and sports equipment and parts thereof)." This classification code is essential for identifying cork products for import/export purposes based on their nature, composition, and intended use. Common products under HSN Code 4503 include cork stoppers, cork sheets, cork insulation, and cork flooring. Additionally, the GST rate for articles of natural cork under this code supports accurate trade compliance.