© 2026 Schemall· The source of structured meaning
True
cmuwsid0o004s1dlvz9w65oy4
productID
The product identifier, such as ISBN. For example: `meta itemprop="productID" content="isbn:123-456-789"`.
c01a111ac86d13d29e1766cbc5004f759
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c01a111ac8835b7180389695b84bd6134
c01a111ad1aec812f9323923f1084545e