The applicators are elastic rubber plates or rollers with the needles fixed on them in a special way. The needles are made of metals necessary for the human body (zinc, copper, iron, nickel, and silver). Basic metals used for making the needles are copper (brass) and iron. All the needles of the applicator or only a part of them have coatings of other metals (the tips of the needles stay uncoated). For lyapko rug example, there may be the following variants: the iron needles ...