Thank you very much for your valuable suggestion!
We will solve it as soon as possible!
Jo***l
2021/5/25 7:37:28
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I am full of admiration !
Because of the very thin sheet of copper and the thick soldermask in cheap PCBs. I ordered the deluxe versions here (double copper, unusual - matte green mask)
It looks professional and that's how it works. For 5 purchased ones, 6 as a gift - Thanks :-)