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 ex29336980 and ex38089420 (TARIC codes 2933698070 and 3808942020), originating in the People’s Republic of China, produced and sold for export to the Union by Liaocheng City Zhonglian Industry Co. Ltd (TARIC additional code A998) should be subject to the anti-dumping duty imposed by Implementing Regulation (EU) No 1389/2011.