> tax the international sale by %40

I'm not surprised. In general, import duties are around 60%, and that's not even the full story. The (foreign) company I work for sent me a development board once; when it arrived here I found out that, in addition to those 60%, I'd have to pay 18% state taxes. I was expecting this to add up to 78%, or even 1.6 * 1.18 = 89%, but in fact it's computed like (1.6 / (1 - 0.18)) = 95%.

Ostensibly, these tariffs are meant to protect the local industry from foreign competition. I heard that there are certain other countries trying to do the same; they should be careful what they wish for.