How to Verify the Validity of CNAS Accreditation

Using official channels is the most reliable and accurate way to confirm the legitimacy of CNAS accreditation. The following two steps can be used to accomplish this:

1. First, go to the official inquiry platform.

Go to the China National Accreditation Service for Conformity Assessment's (CNAS) official inquiry page. The CNAS accreditation information is updated in real time and can be accessed through this official channel.

2. Step Two: Confirm the Accreditation's Validity and Scope

Click "Search" after entering the organization's full name and CNAS certificate number.

Check the organization's status first: "Accredited" shows that the accreditation is now valid; "Revoked/Suspended/Cancelled" indicates that the accreditation is invalid;

Next, confirm the range of expertise: After entering the organization's name, click "Accredited Testing/Calibration Competence Scope," and make sure that "Thermocouple Calibration" and "Temperature Measurement" elements are included. Hot runner calibration is only legitimately covered by the accreditation at that point.

Important details for a fast evaluation:

Official verification is necessary to ensure the authenticity and validity of certifications displayed by an organization.

An organization's qualification for hot runner calibration is void if temperature calibration is outside of its area of expertise.

The official website maintains the validity time of qualification certificates, which are typically good for six years; certifications that have expired are instantly flagged as invalid.