8 types of floor scales

Floor scales are a necessary and useful item. There are a variety of types and models of outdoor appliances on the market. They are endowed with all sorts of additions and, in addition to weight,

Review of 11 types of the best air ionizers

Ionization is the formation of charged ions from neutral atoms or molecules under the influence of a chemical reaction. There are two types of ions (aeroions): positive (cations) or negative (anions). Both types are necessary