Over the last 30 years, Spectrum Fire Protection has evolved into a leading engineering company that can cover both the mechanical and electrical initial design concept, through to installation, maintenance and verification to fire and life safety systems for projects of any scale. Spectrum is committed to continuing sustainable development of its business activities by ensuring it meets the needs of clients, legislation, regulation and society.

Thomas Bell-Wright International Consultants is a privately held engineering firm providing independent quality assurance and testing services for the exterior wall systems of large buildings, and testing of fire containment systems and materials in buildings.

TSI Incorporated serves a global market by investigating, identifying and solving measurement problems. As an industry leader in the design and production of precision measurement instruments, TSI partners with research institutions and customers around the world to set the standard for measurements relating to aerosol science, air flow, indoor air quality, fluid dynamics and biohazard detection.