Hongxing Trading Inc. imported 300 Diesel Air Car Parking Heaters (with compression-ignition engines) in violation of Sections 203(a)(1) and 213(d) of the Clean Air Act (CAA), 42 U.S.C. ?? 7522(a)(1) and 7547(d), and the regulations codified at 40 C.F.R. ?? 1068.101(a)(1), and 1068.101(b)(5), which collectively prohibit the importation of engines or equipment containing these engines, unless they are covered by valid EPA certificates of conformity (COCs) or are properly exempted or excluded. EPA has found no evidence that the 300 Diesel Air Car Parking Heaters are covered by valid COCs or are exempt or excluded from coverage under Title II of the CAA and its implementing regulations. Accordingly, by importing the above-referenced engines, Respondent committed 300 violations of CAA Sections 203(a)(1) and 213(d), 42 U.S.C. 7522(a)(1) and 7547(d), and the regulations codified at 40 C.F.R. 1068.101(a)(1) and (b)(5)