Decoding the Unified Social Credit Code: What 18 Characters Reveal About a Company

The Unified Social Credit Code (USCC, 统一社会信用代码) is China's equivalent of a national company number. Since 2015 it has unified what were previously separate registration, tax, and organization codes into a single 18-character identifier that stays with a company for life. It is the fastest, most reliable way to look up a supplier in official systems.

What the 18 characters mean

The code is not random. Its structure is standardized and can be read position by position:

• Character 1 — the registration authority code (e.g. '9' for the market-regulation system).
• Character 2 — the entity-type code (e.g. '1' for a limited-liability company, '2' for a partnership).
• Characters 3–8 — the six-digit administrative division code, telling you where the company is registered.
• Characters 9–17 — the nine-character subject identification code (formerly the organization code).
• Character 18 — a check character computed from the preceding 17.

What it lets you do

Because the USCC is used across every government system, a single code unlocks a surprising amount of information:

• Corporate registry and credit records (gsxt.gov.cn).
• Tax and invoice status (whether the company can legally issue VAT invoices).
• Customs registration and import/export qualification.
• Court and enforcement records, via the same identifier.

How to spot a fake or wrong code

The code should be exactly 18 characters, consisting of digits and uppercase letters. An easy first check is that it doesn't contain the easily-confused characters 'I', 'O', 'Z', 'S', or 'V' (the standard excludes them precisely to prevent forgery). If a supplier gives you a USCC with those letters, or one that doesn't return a result in gsxt.gov.cn, stop and investigate.

Make the USCC a required field on your supplier-onboarding form. It costs a legitimate factory nothing to provide, and it immediately filters out a large share of impersonators.

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