Artificial filaments are derived from natural polymers (such as cellulose-based viscose or acetate), while synthetic filaments are made from chemically synthesized polymers like nylon or polyester. Monofilaments of synthetic origin at the same dimensional thresholds fall under a different heading, so confirming the polymer base is the first classification step.

Strip under this heading refers to flat artificial textile material not exceeding 5 mm in apparent width, which may be used in woven or braided applications. Products that exceed 5 mm in width are generally reclassified as flat yarn or fabric rather than strip.