- https://ayers-willard.federatedjournals.com/10-fundamentals-concerning-tcf-exam-registration-you-didnt-learn-at-school
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How long is a TCF certificate valid for? Learn about the official validity period, expiry rules, and how to renew your results. Check your certificate status now!
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2026-04-12
Updated 2026-04-12 12:40:04 +08:00