- Underwriters Laboratories (UL)
Provides product certification, validation, testing, inspections, auditing, education and advisory services.
- NSF International
Develops public health standards and certifications that help protect food, water, consumer products and the environment.
- CSA International
Provides certification for electrical, gas-fired, and plumbing products.
- American National Standards Institute (ANSI)
Provides product and personnel certification as well as greenhouse gas verification and validation.