This is a doubt that even native English speakers have!
Electric and electrical are essentially the same - they refer to any device that uses electricity. Flashlights are electric; we also have electric lights and electric heaters, and nowadays even electric cars. Something that is electric just uses electricity for energy.
Something that is electronic is a more complex system - it manipulates the electrical energy in ways that allow for more advanced functions, such as
transmitting information. Computers are electronic, and we also use electronic for digital versions of things in the physical world, like electronic stores/books.
The composite containers cylinders on the
vehicle are manufactured to comply with
FMVSS 304, NAI IAS, or the CSA B51 Part 2
specifications. Containers must have permanent
labels in accordance with applicable
regulations. These labels provide valuable
information to cylinder inspectors and service