If you want to submit a complaint or appeal in connection with the services provided by the Certification Body, please visit our facilities or contact us to know the relevant procedures,

Address your complaint to any UL employee or representative at the following contact details:

UL de México, S. A. de C. V.

Blas Pascal, No. 205, Piso 2, C. P. 11510

Col. Los Morales, México, D.F.

Ph: (52) 55-3000-5400

Fax: (52) 55-3000-5491

Or email to COMEXICOINBOX@ul.com