A friend manages a chemical laboratory at a wealthy research institute. The laboratory regularly purchases special chemical dishes abroad - there are different bottles and test tubes. Customs duties on this equipment are high, customs under the slogan "buy domestic!" Every time he wants to get what he wants. However, foreign dishes are much more quality and cheaper than domestic... if not customs duties and VAT.

A smart friend, he did not in vain finish the MGU. When crossing the border, all test pipes are carefully sealed with traffic jams. In the accompanying documents is written "air samples, imported, in packaging". And the air is still free and its movement is not taxed by customs duties.