Seit Elettronica was founded in 1979 with the purpose of building high frequency induction generators to weld eyewear glasses components and has become in a few years the world leader with more than 10, 000 machines manufactured and sold throughout the world. Its expansion has led to the applications not only in the field of the eyewear sector and has become a leader in the mechanical, electronic sectors and new technologies through the study and construction of the products in its departments of carpentry, mechanics and electronics. Seit Elettronica was the first in Italy to project and build welding generators for Titanium spectacles: many production lines have been installed since then and improvements led to the fulfillment of a complete technology including the casting of titanium for the components. Pushed by its technological innovation, Seit Elettronica certainly could not miss in the construction of lasers for welding ND YAG and CO2 for the marking and cutting. The updated knowledge of laser technology, along with more modern engineering gave birth to the exclusive technology of the LaserBridge, with two patents obtained by this revolutionary system. Seit elettronica is also well-known in dental and goldsmith with specific ranges of MF and HF induction centrifugal machines, lasers and the lost wax. The research has led the Seit Elettronica to build and to patent several electronic circuits to build welding systems with different frequencies and powers up to 50KW and to better meet the needs of customers specializing itself in the construction of all media and automation related to welding. Especially for the industry, Seit elettronica is a leading manufacturer of MF and HF induction heating for industrial applications, or equipments.</p>