I never fail to be amazed by the ingenuity of the Chinese con-artistes, if only they apply the talents to solving some of earth's problem instead of contributing to it.... sign ....
These are 2 examples :
Electrolytic capacitors - e-caps are used in all electronic devices from mobile phones, washing machines to a car. They store electricity to start up your devices, something like a battery.
Like the hard drive, this one has much-cheaper and lower capacity capacitor inside. Needless to say, it will fail or worse, explode.
Years ago when I was stationed in Beijing, a customer from UK went to the Silk Market and bought one of those rechargeable torchlight. It was cheap, a couple of dollars and it works great. It stores the charges in its twin rechargeable coin-sized batteries when you work the hand crank.
The UK guy thought it was a great idea (and it is), and contacted the factory rep (or so he thought), paid a deposit for a thousand pieces and went home rubbing his hands. Wow, he could make a bundle selling it for 5 quid.
Well, needless to say, the 'rechargeable' batteries turned out to be normal batteries, non-rechargeable, so when it is depleted, the torch is useless. Last I heard of it, the UK guy stilll managed to turn a much smaller than expected profit by replacing the batteries with the real McCoys.
This is not the exact model but you get the drift.