Positronics actively collaborated in the development and birth of the first hybrids of Cannabis in Europe. Positronics consolidated in Amsterdam as the pioneer in the self-cultivation and selective breeding of Cannabis. From then until now, the seed has continued to spread among thousands of farmers. Was achieved not without problems, new varieties exported to Holland where they decided to move to work in a professional manner. They were pioneers in developing the technique of growing seedless, from cuttings, which marked a revolution around the end of the seventies of the last century.