Envair Holding Berhad, an investment holding company, engages in the manufacture and distribution of air filters in Malaysia. The company also involves in the installation of clean room systems and sale of clean room equipment; and trading of vinyl flooring and beauty products. In addition, it manufactures and sells water and air filters; and engages in the selling, installation, maintenance, and servicing of water treatment equipment. The company was formerly known as Ruby Quest Berhad. Envair Holding Berhad is based in Shah Alam, Malaysia.