Steel coils; Temporary importation bond; silicon electricalsteel; Subchapter XIII, U.S. Note 1(a); 19 CFR 10.31 - 10.40; 19CFR 141.90; 19 CFR 141.103; Subchapter XIII, U.S. Note 1(c); 19CFR 10.39(d)(1); Subchapter XIII, U.S. Note 2(b); Subheading7204.30.00; "waste and scrap"; Section XV, note 6(a).