To replace the atomizer, remove the tank from the battery and turn the tank upside down, unscrew the air flow base and carefully set the tank aside. Take a new OCC head and screw to the air flow base tightly. Adjusting the airflow: Please order, based on the part number only. Before buying: If you have some special requirements. Regulation and suggestion: They will take longer time than EMS and other express way and you can not track your goods[…]