Ключевые слова: alarm, alert, attention, beware, black, caution, chemical, chemistry, combustion, danger, design, doors, europe, fire, flame, flammable, hazard, ignites, industrial, industry, inflammable, information, informing, label, laboratory, material, oxidant, oxidizing, oxygen, reaction, safe, sign, sticker, strong, substance, symbol, technology, triangle, triangular, unsafe, urban, warning, yellow,