Can a manufacturer ban us from using its products ?

[CatalinaWOW]

EU is a huge market.  But perhaps not for that chip or even that manufacturer.  Different regions have different preferences, different rules and different suppliers leading to significant differences in products.

To take the most obvious example - a vendor of 110 VAC outlets and switches could probably ignore the EU market without harming sales significantly.   

[TAMHAN]

Hello,
if you are referring to a man and his dog - don't say it is a Slovak distributor.

Tam