The European Union has admitted that it cannot monitor whether producers working from Israel’s settlements in the occupied West Bank are fraudulently taking advantage of trade privileges. Since 2000, the EU has allowed most Israeli goods to enter its markets without incurring taxes or customs duties. Exports from Israel’s settlements in the occupied West Bank and Golan Heights are not eligible for those perks, because the EU does not recognize those territories as part of Israel. Yet a document – obtained under EU freedom of information rules – states that checking where Israeli goods originated from has proven “impossible.”
— source electronicintifada.net 2017-10-22
So its better to boycott everything from Israel.