Commission Regulation (EEC) No 1311/86 of 2 May 1986 re-establishing the levying of customs duties on diodes, transistors and similar semiconductor devices, light-emitting diodes, electronic micro-circuits and parts, falling within subheadings 85.21 D and E, originating in South Korea, to which the preferential tariff arrangements set out in Council Regulation (EEC) No 3599/85 apply