Minsk`s scientists will introduce their developments at Hannover Trade Fair which will take place April, 21-25, 2008. These are know-hows in the field of radio electronics, laser technology and nanotechnology, new materials of light industry and medical industry, environment control. In particular, Metolit Technopark of the Belarusian State Polytechnic University will negotiate a further contract with German partners on sale of absorption biochemical installations for vent air purification. Metolit Technopark will also present unique medical equipment.