Canadian Radon Services Index
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Certified provider

Guoyan Liu

Is Guoyan Liu C-NRPP certified? Credential types, status and expiry dates, who holds them, locations and provinces served, as of the last registry check.

London, ON

  • C-NRPP Credentials checked
  • Measurement
  • Residential

Unclaimed

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Certified professionals

C-NRPP credentials held by the professionals listed with this business, as of 2026-11-03.
ProfessionalCredential typeNumberExpiryStatus
Guoyan LiuRadon measurementCRT-2029042028-07-01Active

Business contact

London, Ontario N6H 3P8

Phone: (226) 224-3026

Provenance

Source
C-NRPP Find a Professional directory, pulled 2026-11-03.
Date checked
2026-11-03
Next review
2026-12-03
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Sources

  1. C-NRPP, Find a Professional directory: every province and territory searched for each of the six service types, de-duplicated by the registry's person id. Pulled on 2026-11-03.

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