Can you help me to correct the following sentences? 1.Biscuits become softer after left out at production area rather than air-con area. 2.Biscuits that exposed at air-con area(dry area)could slow down the biscuits become damp. 3.Install air-con at production area. 4.Control the air exposure time of biscuits within 30 minutes in order to prevent the biscuits become soft. Thank you very much for your help.
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