Responsible of sales and project management for VIP customers range from HVAC system design, installation, BOQ Costing, Project Timeline management until services & maintenance . IAQ project involves during career with Siam Daikin Sales Co.,ltd. Indoor Air Quality (IAQ) Projects (2023) AOT Phuket Case Study: Collaborated with Dr. Prapat (IAQA) and AOT to establish an IAQ case study in Phuket offices. Addressed high CO2 levels and ventilation inefficiencies using Heat Reclaim Ventilators (HRVs) to improve airflow, reduce CO2, and optimize energy use . Partnership with MOH and IAQA: Worked with MOH and IAQA, led by Dr. Prapat, to develop IAQ standards for hospitals, schools, and childcare centers. Focused on pollutant control and improving indoor comfort . Conducted PoC projects to test IAQ solutions in hospitals and schools, addressing PM2.5, CO2, and humidity issues. Results informed MOH standards and enhanced health outcomes .