Ключевые слова: blue, butane, chain, compressed, concept, container, cylinder, danger, energy, equipment, flammable, gas, group, industrial, industry, label, liquid, material, metal, mobile phone, multicolored, no activated, no fire making, no smoking, nobody, object, old, outside, petroleum, portable, pressure, propane, red, risk, safety, sign, storage, sunlight, symbol, tank, valve, vertical, wall, warning, wear mask, wear shoe, white, yellow, zone,