Yes. The GS1 System was designed based on the UPC barcode system, so the UPC-A & UPC-E symbols are 100 percent compatible with all GS1 Systems. Companies using UPC-A & UPC-E bar codes can have their products identified across the globe without any difficulty.

A sunrise date on January 1, 2005 has been set for the global acceptance of GTIN-13. However, a few retailers in the US and Canada may experience a problem in that their systems not able to accommodate GTIN-13. In such case, the GTIN-12 represented in a UPC-A or UPC-E Symbol is required.

No. The GS1 System is a totally neutral system that can be used to identify anything that is traded among companies, as well as individual retail items at the point-of-sale. Goods are scanned as they leave manufacturers, as they are handled by distributors, scanned again at goods inwards at warehouses and depots, again for stock counts, as orders are picked and so on. The system is used by companies operating in all trade and industry sectors. Product barcode registration from GS1 HK, the only official Hong Kong barcode issuer in Hong Kong.

Barcode numbers beginning with 489 are the barcode numbers that come directly from GS1 Hong Kong and only GS1 Hong Kong is the official issuer of 489 barcode. After joining GS1HK full membership, you can enjoy variety of product barcode application which provide a common language to identify, capture and share supply chain data, to ensure important information is accessible, accurate and easy to understand. 

After you have product barcodes registration with GS1 HK, your product can ensure is globally unique ensure and use global standards include data carriers such as UPC HK barcodes and EAN HK barcodes. They are used to encode information such as product numbers, serial numbers and batch numbers. Product barcodes, including UPC HK barcodes, EAN HK barcodes and EAN 13 barcodes, play a key role in supply chains, enabling users including retailers, manufacturers, transport providers and hospitals to automatically identify and track products as they move through the supply chain. GS1 barcodes manages several types of barcodes, many of which comply with ISO standards. Each is designed for use in a different situation. After product barcode registration, you will receive an official GS1 certificate (in paper and digital format), to verify that your barcode numbers are unique, internationally recognised and of authentic source.