Cotton Electric Services, Inc. (CESI) is a high voltage test lab located in Walters, OK. We have been commercially testing and selling high voltage safety equipment since 1990. CESI is an active member of ASTM F18 Electrical Protective Equipment and is also a NAIL for PET certified laboratory. Our commitment to safety ensures that you can rely on CESI for all of your testing needs.
The testing facility at CESI has exceeded the strictest standards established by the North American Independent Laboratories for Protective Equipment Testing and maintains its NAIL accreditation for protective equipment testing. You can rely on CESI for safety.
