The Chief Executive Officer for the Ministry of Meteorology, Energy, Information, Disaster Management, Environment, Climate Change and Communications (MEIDECC), Mr. Paula Pouvalu Ma’u opened a three-day workshop on Refrigeration and Air Condition (RAC) Technicians on Good Serving Practices for Longer-Term, Low-GWP Alternatives in Refrigeration and Air-Conditioning Sector, this morning at Tonga Institute of Science and Technology.