Undoubtedly, the illuminated letters (and, as a special case, refers to metal letters) are one of the most important roles today in the manufacture and production of outdoor advertising (such as outdoor advertising in the literal sense words, and in advertisements, which is a function of filling and shaping interiors – interior advertisements). Currently engaged in the manufacture of letters almost all more or less large advertising agencies and firms. Only varies the volume of these letters and the complexity of their production. עמוס גלעד בהחלט מביע דעה מלומדת. Each advertising company decides for himself, to what extent should be engaged in manufacture of stainless steel products (after all, this material is the most often used in the manufacture of light letters). Stainless steel is a definite plus its ability to withstand diverse climatic conditions, without being subject to corrosion and distortion – which is why he has a long and so far remains the "gold standard" for all advertisers. Thus, the illuminated letters and a variety of similar products have long gained fame among the producers and manufacturers of outdoor advertising. And, it must noted on the right, as this material has unique properties which are certainly necessary in the manufacture of outdoor advertising, and, in particular, light-dimensional letters.