Chemical preparations for use in solar cell manufacturing, printed board manufacturing, manufacturing of three-dimensional structures on semiconductor material, namely, silicium wafers, acid-proof pastes, acid-proof solutions, acid-proof coatings, acid-proof coatings with a wax base, acid-proof greases, etch resistant preparations, printed etch-resistant coatings, etch-resistant coatings for the manufacture of structures on substrates, etch-resistant coatings for the manufacture of electric a...