One of the most important conditions necessary for carrying out repair and construction work at any facility is the use of building materials of proper quality. On the one hand, it is not difficult to solve this problem at present: you can buy building materials in many specialized stores or on the market. However, upon closer examination, we understand that buying everything you need is not so easy as it seems at first glance: either the quality of the product is low, or the assortment is small, or the prices are sky-high.