So how to adjust the slider airflow control of Freemax Onnix 20W? When you use the OX Mesh Coil 0.5ohm, you just need to adjust slider airflow control wide open to your preferences for RDL vaping. While you use the OX DVC Coil 1.0ohm, it is recommended with slider airflow control closed to your preferences for MTL vaping.

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