- APT d.o.o. Stegne 21C PO BOX 3746 SI-1001 Ljubljana Slovenia h.c. phone. +386 1/ 510 68 70 production phone. +386 1/ 510 68 75 In-Media. +386 1/ 511 44 30 fax. +386 1/ 511 44 34 mail. info@aptagency.com Full service advertising and marketing house: graphic design creative writing public relation product placement media buying and planning own production house for audio, video, multimedia and ...www.aptagency.com