16 march 2021 - 12:40:57 DRW/MA Panafrican News Agency Companies asked to renew their ozone depleting substances permits Gaborone, Botswana (PANA) - Botswana’s Department of Meteorological Services has put out a call to companies to renew their annual permits for import, export and transit to trade in Ozone Depleting Substances (ODSs)