It can be difficult to differentiate between knock-off and real CCell cartridges. Here's some guidance to determine if your CCell cartridge is authentic.
The bottom (underneath) side of the cartridge will contain (3) engravings:
The CCELL logo
The batch number (ex. C2320)
Logo or name of CCell Certified Distributor
*There are (4) certified distributors of CCell products, which include: Jupiter, 3 Win, CB, & Kush (K). All CCell Cartridges from VPM.COM meet this citeria and are guaranteed authentic.