1. Storage Varieties: apple
2. Model of CO2 Scrubber: ST300
3. Model of VSA Nitrogen Generator: VSA20
4. Control System: PLC
5. Completion Time: 2009
The oxygen content of the common CA room is 3% while that of the ultra low oxygen storage system is 1.5%. When the apple is stored in the ULO CA room, its fresh-keeping period can be prolonged to around 10 months.