Here is a short but great Tutorial on how to find a products origin (country where it was made) from its bar code. For those of you who dont know what bar code is, It is actually lines and numbers written underneath on any products back like one below:
The Trick is actually reading the first three numbers, in this case "478". After you have got the first three numbers match it with table below to find its origin. In this case the product was from "Uzbekistan"

TABLE:
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 ASSIGNED GS1 PREFIXES
000 - 019     GS1 US
020 - 029     Restricted distribution (MO defined)
030 - 039     GS1 US
040 - 049     Restricted distribution (MO defined)
050 - 059     Coupons
060 - 139     GS1 US
200 - 299     Restricted distribution (MO defined)
300 - 379     GS1 France
380     GS1 Bulgaria
383     GS1 Slovenija
385     GS1 Croatia
387     GS1 BIH (Bosnia-Herzegovina)
389     GS1 Montenegro
400 - 440     GS1 Germany
450 - 459 & 490 - 499     GS1 Japan
460 - 469     GS1 Russia
470     GS1 Kyrgyzstan
471     GS1 Taiwan
474     GS1 Estonia
475     GS1 Latvia
476     GS1 Azerbaijan
477     GS1 Lithuania
478     GS1 Uzbekistan
479     GS1 Sri Lanka
480     GS1 Philippines
481     GS1 Belarus
482     GS1 Ukraine
484     GS1 Moldova
485     GS1 Armenia
486     GS1 Georgia
487     GS1 Kazakstan
488     GS1 Tajikistan
489     GS1 Hong Kong
500 - 509     GS1 UK
520     GS1 Global Office
521     Global Office (Greece)
528     GS1 Lebanon
529     GS1 Cyprus
530     GS1 Albania
531     GS1 MAC (FYR Macedonia)
535     GS1 Malta
539     GS1 Ireland
540 - 549     GS1 Belgium & Luxembourg
560     GS1 Portugal
569     GS1 Iceland
570 - 579     GS1 Denmark
590     GS1 Poland
594     GS1 Romania
599     GS1 Hungary
600 - 601     GS1 South Africa
603     GS1 Ghana
604     GS1 Senegal
608     GS1 Bahrain
609     GS1 Mauritius
611     GS1 Morocco
613     GS1 Algeria
615     GS1 Nigeria
616     GS1 Kenya
618     GS1 Ivory Coast
619     GS1 Tunisia
621     GS1 Syria
622     GS1 Egypt
624     GS1 Libya
625     GS1 Jordan
626     GS1 Iran
627     GS1 Kuwait
628     GS1 Saudi Arabia
629     GS1 Emirates
640 - 649     GS1 Finland
690 - 695     GS1 China
700 - 709     GS1 Norway
729     GS1 Israel
730 - 739     GS1 Sweden
740     GS1 Guatemala
741     GS1 El Salvador
742     GS1 Honduras
743     GS1 Nicaragua
744     GS1 Costa Rica
745     GS1 Panama
746     GS1 Republica Dominicana
750     GS1 Mexico
754 - 755     GS1 Canada
759     GS1 Venezuela
760 - 769     GS1 Schweiz, Suisse, Svizzera
770 - 771     GS1 Colombia
773     GS1 Uruguay
775     GS1 Peru
777     GS1 Bolivia
779     GS1 Argentina
780     GS1 Chile
784     GS1 Paraguay
786     GS1 Ecuador
789 - 790     GS1 Brasil 
800 - 839     GS1 Italy 
840 - 849     GS1 Spain 
850     GS1 Cuba
858     GS1 Slovakia
859     GS1 Czech
860      GS1 Serbia
865     GS1 Mongolia
867     GS1 North Korea
868 - 869     GS1 Turkey
870 - 879     GS1 Netherlands
880     GS1 South Korea
884     GS1 Cambodia
885     GS1 Thailand
888     GS1 Singapore
890     GS1 India
893     GS1 Vietnam
896     GS1 Pakistan
899     GS1 Indonesia
900 - 919     GS1 Austria
930 - 939     GS1 Australia
940 - 949     GS1 New Zealand
950     GS1 Global Office
951     GS1 Global Office (EPCglobal)
955     GS1 Malaysia
958     GS1 Macau
960-969     Global Office (GTIN-8s)
977     Serial publications (ISSN)
978 - 979     Bookland (ISBN)
980     Refund receipts
981 - 983     Common Currency Coupons
990 - 999     Coupons
Note: From the 960 prefix range, 9600 to 9604 have been assigned to GS1 UK for GTIN-8 allocations. Prefixes not listed above are used by GS1 Global Office for number allocations in non-member countries and reserved for future use.
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