If correct customs designation code for electronics from China, than 0% customs fees in EU should apply. Can you confirm? I am only writting about customs fees, not taxes.
Indeed, but you have to pay the VAT, which is 20-25% depending on the country.
Yes, that's right information.
You can use customs code 84718000 00 or 84719000 00 for Miner and 85044030 90 for PSU