HTS code 9902.13.40 covers "Woven fabrics of synthetic staple fibers, containing 85 percent or more by weight of polyvinyl alcohol staple fibers and up to 15 percent of polynosic rayon fibers (provided for in subheading 5512.99.00)" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.