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TROX is the leader in the development, manufacture and sale of components, appliances and systems for indoor air conditioning and ventilation.Dedicated research has made TROX a leader of innovation in these fields.

The history of Trane began in 1885 as a family plumbing business in La Crosse, Wis. Joined by his son Reuben, a mechanical engineer, James Trane developed an innovative low-pressure

Honeywell invents and manufactures technologies that address some of the world’s most critical challenges around energy, safety, security, productivity and global urbanization.

AAF International traces its roots to Bill Reed, a skilled engineer and clever entrepreneur who recognized in 1921 that cleaning the air was critical to the growth of society,

Kruger is a leading supplier of energy efficient ventilation solutions for residential and commercial buildings, industrial applications and infrastructures.