RELX Product - What is the material of the device and pod?
RELX devices (Infinity, Essential and Classic) are made of aluminum alloy with high strength and endurance. The shell material of cartridge is PCTG produced by Eastman in the US, which is mostly used to make aviation cups, milk bottles, etc. It is resistant to high temperature and will not release harmful substances, thus you can use it without any worries.
Also in Product Information

MagicGo Plus GA600— Everything You Should Know
Discover the thrilling developments and advantages that have led to RELX’s MagicGo Plus GA600. Perfect for experienced and inexperienced vapours, check out this guide on everything you need to know about this state-of-the-art device.
Disposable Vapes - How much nicotine is in a RELX disposable vape Bar?
The RELX disposable vape bar features 19mg/mL of nicotine, 2ml of capacity, enough for most vape users to get 600 puffs.