On the issue of efficiency of the device for development of concentrations PRK-1U we announce that the effectiveness of this device for the development of eternal life concentrations is objectively established as follows:

1. Physico - mathematical theory, mathematical calculations, results of experiments, confirmed by the numerous doctors of physico - mathematical  and technical sciences who were part of the editorial board of the journal "Electronic Equipment" published in the same magazine:

https://licenzija8.wordpress.com/science/

2. Patents for inventions of Grigori Grabovoi on the basis of which the device was created:

https://licenzija8.wordpress.com/patents/

3. The video testimonials of testing of the device with systematically good results, achieved without exception and recorded in the testimonials of 128 participants of the testing:

https://pr.grigori-grabovoi.world/index.php/technical-devices/video-testimonials

4. Signed protocols of successful testing of the device:

http://pr.grigori-grabovoi.world/index.php/technical-devices/written-testimonials

 Yours faithfully,

Administration of “GRIGORII GRABOVOI PR KONSALTING TECHNOLOGIES OF ETERNAL DEVELOPMENT