Commission Regulation (EEC) No 1758/89 of 20 June 1989 re-establishing the levying of customs duties on hexachlorocyclohexane, falling within CN code 2903 51 00, and cysteine, falling within CN code 2930 90 10, originating in China, to which the preferential tariff arrangements set out in Council Regulation (EEC) No 4257/88 apply.