State about the international standardization

There are many examples, certainly. Some systems for which there is international standardization include compressed disc players with their discs, such as Walkman tape players and audio cassettes, cameras and their 35mm film, bank cards and automated teller machines. Areas where these international standardization is lacking contain VCRs and videotapes (NTSC VHS in the U.S., SECAM VHS in other countries, PAL VHS in parts of the Europe), portable telephones, light bulbs and lamps (different value of voltages in different countries), appliance plugs and electrical sockets (every country does it differently), photocopiers and paper (such as 8.5 x 11 inches in the U.S., A4 everywhere else in world), nuts and bolts (English versus metric pitch) etc.