Read fabulous articles about nano technology:
In the United States, colloidal gold (in this days even better nano))has been used to treat alcoholism since 1885, as it reduces the attraction to alcohol....
Silver has been known for centuries for its beneficial biocidal activity. Since the 1970s, trials have been made in this field with colloidal silver ground...
Silver is not only a precious metal, but also a trace element, important for the proper functioning of the human body. Already in ancient times its natural...
Gold is a precious metal accompanying man for thousands of years until recently it was valued because of its aesthetic values as well as chemical resistance.