Singapore—The Changi Foundation, which is the philanthropic arm of the Changi Airport Group (CAG), has donated a powerful disinfectant that has been applied to all 1.5 million HDB lift buttons in Singapore. The disinfectant, called sdst, is effective for 90 days. According to a statement from Changi Foundation on April 2, 650 liters of the … Continue reading Powerful disinfectant applied on all HDB lift buttons is effective for 3 months