I would hope these shows would give them a test with their employees before ordering to sell.

I pretty much don’t buy electronics anymore if there are no reviews. I will just google reviews of the product. Years ago I bought a set of 4 chargers and loved them but two years ago I bought a set of two, didn’t use them for 3 months, they did not work, they were very pretty got garbage. Then about 6 months ago they had more in their own case with multiple connections and they are very good, love them.