Our network of more than 1,000 laboratories and offices in more than 100 countries, delivers innovative and bespoke Assurance, Testing, Inspection and Certification solutions for our customers' operations and supply chains.
Intertek is the industry leader with employees in 1,000 locations in over 100 countries. Whether your business is local or global, we can help to ensure that your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world.
The Warnock Hersey (WH) Mark is North America’s leading product safety and performance mark for building and construction products. Fill out the Form below to view Frequently Asked Questions about Intertek's Warnock Hersey Certification Mark.