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Nick here from Shopify!
I took a look and did some digging for you. There seems to be one standout electronic gadget supplier you can use in Hungary called UBuy, where they have a wide variety of products and brands to choose from.
There is another supplier I found but don't seem to have the products you might be looking for, they are called WholesaleDeals. To get a bigger choice, you might have to look and be willing to try suppliers outside of Hungary, possibly mainland Europe. Do you think this is something you could do? If so, we can take another look at some suppliers around Europe.
You can check here.