>My long winded point being that these days I assume that anything from China is a knock-off.
>I just don't always care.
Not just knock-offs, some are positively dangerous.
I received a little LED spot light as an 'equivalent' replacement for an outdoor LED flood that had failed after less than a week. It's been sat on a shelf in the garage for months until I tried to use it last week as a handheld garage light. It tripped the earth leakage breaker immediately when it was switched on. My meter showed that live to earth was only about 5kohm so I dismantled it to see what the problem was*.
Oh my Glub! You should see the standard of construction of this thing. The LED array and its little PCB mounted on a bit of loose aluminium plate that is held against the lamp housing by the pressure of the glass and reflector. All three mains conductors hand soldered (badly) to the PCB. Absolutely no way did this thing pass any electrical safety certification despite the CE marking on the box.
* A stray strand of the earth was touching part of the LED array.
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