4705.00.00.00 - Wood pulp obtained by a combination of mechanical and chemical pulping processes

HTS Code 4705.00.00.00 specifically classifies wood pulp produced through a combined mechanical and chemical pulping process. This method, often referred to as semi-chemical or chemi-mechanical pulping, utilizes both physical grinding and chemical treatment to break down wood into its constituent fibers. The resulting pulp is characterized by a balance of fiber strength and yield, making it suitable for a variety of paper and board products where enhanced properties are desired compared to purely mechanical or purely chemical pulps.

This classification stands apart from other wood pulp categories by its dual processing method. For instance, purely mechanical pulps (e.g., HTS 4701.00.00.00) are produced solely by grinding, resulting in higher yields but weaker fibers. Conversely, fully chemical pulps (e.g., HTS 4702.00.00.00 or 4703.00.00.00) undergo extensive chemical digestion, yielding stronger but lower-volume fibers. Therefore, goods falling under 4705.00.00.00 possess distinct physical and chemical characteristics directly attributable to the combination of pulping techniques employed.

As a leaf node within the HTS structure, HTS Code 4705.00.00.00 does not have further subdivisions. Classification at this level is final, and importers or exporters should ensure the material precisely meets the definition of wood pulp obtained by a combination of mechanical and chemical pulping processes. This would include verifying the manufacturing process and potentially the resulting pulp characteristics such as lignin content and fiber morphology, which are indicative of the combined pulping method.