For instance, a device serial number field could contain the manufacturer's serial number, an asset tag number issued by the organization that installs it, or something completely different.
An example epc is "urn: epc: id: sgtin: 1234567.654321.999", where "1234567" is a manufacturer identifier, "654321" is a product class, and "999" is a serial number.
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如果您想知道生产日期，我可以通过序列号帮您找到。
If you need to know the manufacturing date, I can find out for you based on the Serial Number.
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