1) Each pump is packed in a separate carton. 2) Many pumps are packed in large cartons. 3) The inside of the large carton is filled with foam to prevent damage during transportation. For HEPHIS 4-20mA KMnO4 H2O2 Auto Control 2.28-24LPH@10-2Bar AC100-240V Electromagnetic Solenoid Dosing Metering Pump