Yes, they are the supplier; it’s been talked about here a number of times. NewVape even sent people in Europe to them for coils and controllers before starting to stock the right ones for use with European power outlets themselves.
There's a couple points I'd like to make about the vape code amazon listing. The XLR coils that I received from vapecode/sweetcigs were not wired to the "dnail standard pinout". The coil in the amazon listing only has 3 wraps and although it will likely work in the vrod head it was designed for a coil with 4 wraps. The amazon coil also uses an older style sheath (not Kevlar) the only difference is the bend-ability when storing the coil cord. Just because the xlr connector is the same doesn't mean that it's wired properly for your box. I would always check the pinouts prior to powering up. Although vapecode may be the manufacturer I purchase our enails from another company called sweetcigs. I'm not aware of the details of there relationship. Some people may think I've purposely designed the vrod for a special 20mm coil. It's just not true. The vrod head was simply designed around the same 20mm coils we had been receiving from our supplier for the past 3 years. The showerhead system is much more universal in terms of coil geometry. The vrod head is more specific because of the integrated coil cover, nut, and helical ramp.