Giving produce exporters a better way to maintain the quality of perishables in transit, Hamburg Sd, one of the top refrigerated container carriers worldwide, recently added 400 refrigerated containers equipped with Carrier Transicold's XtendFRESH atmosphere control system. Carrier Transicold is a part of UTC Building & Industrial Systems, a unit of United Technologies Corp. To slow ripening and help preserve produce quality, the XtendFRESH system actively manages oxygen and carbon dioxide levels within refrigerated containers and removes ethylene.