The application steps for QR codes on packaging bags are as follows:

1. Enterprises should apply to the my country Product Coding Center (hereinafter referred to as the "Center") or its branches to apply for Chinese product barcode production Register the enterprise identification code and fill it out as required.

2. The enterprise should provide a copy of the "Enterprise Legal Person Business License" (private enterprises or individual industrial and commercial households without legal status should provide a "Business License") and the "Trademark Registration Certificate" (not used on products) If a registered trademark is registered, the enterprise shall issue a certificate) and submit it to the center or its branch together with the "Manufacturer Code Registration Request Form".

3. Enterprises should pay relevant fees.

4. After registration, the center will inform the enterprise of the manufacturer's code in writing and issue the "Certificate of Membership of my country's Product Barcode System" to the enterprise.

5. The center will publish the company and its registered manufacturer code.