We equip with precision instruments to conduct IAQ test and product demonstration*. Based on the actual environment and results of IAQ assessments, our consultant can identify the pollution sources, provide professional advices and recommend the most suitable model for improving overall indoor air quality of your place.Please click HERE or call our service hotline at (852) 2815 8388 for appointment of IAQ consultancy services.   *Except Outlying Islands where toll charge is incurred.