Most cartridges is often refilled with the own THC oil, CBD vape oil or e-liquid before you have to have to remove them. If it’s a 510 style cartridge, just unscrew the mouthpiece and fill the tank up. You might need to use a syringe for accuracy. Store upright: Usually https://cristianiarpf.answerblogs.com/32861733/the-2-minute-rule-for-buy-carts