I-SF EXPRESS ingenye yezinkampani ezinkulu zokulethwa kwezidingo emhlabeni wonke, ehlinzeka ngezinsizakalo zokulethwa okusheshayo nezithembekile ezigidini zamakhasimende nsuku zonke. Nokho, i-SF EXPRESS ibhekane nenselele lapho ifuna ukuthuthukisa insizakalo yayo yokulethwa nokunciphisa izindleko zayo zokusebenza. Babedinga umphakeli onokwethenjelwa nongabizi wezingxenye zezimoto nezinsiza zemoto ezingathuthukisa izimoto zabo zokulethwa kanye nokusebenza kahle.