Each entry summary covering wool or hair subject to duty at a rate per clean kilogram under Chapter 51, Harmonized Tariff Schedule of the United States (19 U.S.C. 1202), shall show as to each lot of wool or hair covered thereby, in addition to other information required, the total estimated or actual net weight of the wool or hair in its condition as imported, its total estimated clean yield in kilograms, and the estimated percentage clean yield. (19 U.S.C. 1484.)