Nowadays more and more knock-offs are involved in people's daily life. Not surprisingly Photocatalyst Mosquito Killer is no exception. Recently we bought 2 similar products from the internet. We hope you can see the difference.
Basically, their inside all look the same. I guess they probably come from the same manufacturer so we just look one product teardown.
Outside: Copycat electrical wire
Above are certificated electrical wire.
Inside: Copycat has many messy wires.
This is not gonna pass BSMI certification in Taiwan.
What size electrical wire do they use?
No-Name wire is thinner and very easy to pull apart.
Inside: Only use 2 screws to lock fan may cause fan noise easily.
Let’s see photocatalytic reaction test. 
Stamp ink is made by organic material and it would fade after photocatalytic activity.(if material has photocatalyst)
Take a wet towel to rub ink on the white plastic board of GR-01. Use a card to block 1/2 ink and put it under UV irradiance for 5 minutes.
We use large UV light to shorten the process of photocatalytic activity. 
Remove the card and you can see photocatalysic reaction let the blue ink fade.
Unfortunately, copycat photocatalyst experiment doesn’t have the same result.
Use another reagent to test photocatalytic activity. If material has photocatalyst, reagent will change color to light green.
We use same reagent to test copycat. It doesn’t have any change. Why am I not surprised ?
