4704.21.00.00 - Coniferous

This HTS category, 4704.21.00.00, specifically covers semi-bleached or bleached chemical wood pulp derived from coniferous trees, produced via the sulfite process, and excludes dissolving grades. Coniferous wood pulp is characterized by its longer fiber length compared to non-coniferous types, making it suitable for applications requiring strength and stability, such as printing paper, packaging materials, and tissues. The sulfite pulping process involves using a bisulfite solution to break down wood fibers, resulting in a pulp that can be further processed for bleaching.

This classification distinguishes itself from its sibling category, 4704.29.00.00 (Nonconiferous), by the botanical origin of the wood used. While both are sulfite pulped, semi-bleached or bleached chemical wood pulps, the distinction lies solely in whether the source material is from coniferous (e.g., pine, spruce, fir) or non-coniferous (e.g., hardwood) trees. This difference in fiber morphology and composition is a key determinant for specific end-use applications.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, classification under 4704.21.00.00 is definitive based on the material being semi-bleached or bleached coniferous chemical wood pulp produced by the sulfite process, and not intended for dissolving grade applications. Importers and exporters should ensure the documentation accurately reflects these characteristics to facilitate proper customs clearance.