A review of Implementing Regulation (EU) No 1389/2011 is hereby initiated pursuant to Article 11(4) of Regulation (EC) No 1225/2009 in order to determine if and to what extent the imports of trichloroisocyanuric acid and preparations thereof, also referred to as ‘symclosene’ under the international non-proprietary name (INN), currently falling within within CN codes ex 2933 69 80 and ex 3808 94 20 (TARIC codes 2933 69 80 70 and 3808 94 20 20), originating in the People's Republic of China, produced and sold for export to the Union by Juancheng Kangtai Chemical Co. Ltd (TARIC additional code A101) should be subject to the anti-dumping duty imposed by Implementing Regulation (EU) No 1389/2011.