074000003224

• 0 — Number system
• 74000 — Manufacturer code
• 00322 — Product code
• 4 — Check digit (confirms the number is well-formed)

UPC-A ✓ Valid check digit

• 030275400359 — Discover Group canon gpr-4 toner cartridge 4234a003AA
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• 051851353661 — Discover Group oki 43459301 Yellow toner 43459301

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