The group's principal activity is to engineer, manufacture and market air conditioners and heating equipment. the products include commercial rooftop air-conditioners, heat recovery equipment, air-conditioning coils and air handling and condensing units. their market consists of commercial and industrial new constructions and replacements. in 2001, the group began marketing commercial water chillers too. the major customers of the group are wal-mart stores inc, home depot inc and target stores inc.