Complaints About the Global Trust Certification (GTC) Process or GTC Clients

Global Trust Certification (GTC), an NSF company, accepts all written complaints about the GTC process and about GTC-certified clients.

Who Can Submit a Complaint?

If you wish to submit a written complaint about the Global Trust Certification (GTC) process or GTC clients, NSF will accept your written complaint. This applies to any individual, organization, worker or employee of a certified client, scheme owner or other interested party.

GTC will address written complaints in accordance with its complaints-resolution procedures.

How to Submit a Complaint

Please email your complaint to any member of the GTC staff, or to When you notify GTC about your complaint, please include the following information:

  • All details related to the complaint
  • Any evidence that supports your complaint

We're Here To Help

Share this Article

How NSF Can Help You

Get in touch to find out how we can help you and your business thrive.