5101.30 - Carbonized:

This HTS classification, 5101.30, specifically addresses carbonized wool. Carbonization is a process used to remove vegetable matter, such as burrs and seeds, from wool by means of chemical treatment. The resulting wool is therefore free from these impurities, making it suitable for finer textile manufacturing processes.

This category is distinct from its siblings. "Greasy, including fleece-washed wool" (5101.1) refers to wool in its natural state or after washing but before any significant cleaning or processing. "Degreased, not carbonized" (5101.2) covers wool that has had its natural grease removed but has not undergone the carbonization process to eliminate vegetable matter. Therefore, carbonized wool (5101.30) is a more refined product due to the removal of both grease and vegetable impurities.

Within this carbonized category, further subdivisions exist to account for the extent of post-carbonization processing. "Not processed in any manner beyond the carbonized condition" captures wool that has only undergone the carbonization treatment. "Other" would then encompass carbonized wool that has undergone additional treatments or modifications beyond the basic carbonization, such as further cleaning or partial processing, but still primarily defined by its carbonized state.