Ключевые слова: background, big, chain, chains, closeup, concept, connect, connection, construction, crane, design, ear, element, gray, heavy, industrial, industry, iron, isolated, link, linked, lock, metal, metallic, nobody, object, pattern, pebble, power, protection, round, safety, secure, security, shiny, stainless, steel, strength, strong, symbol, texture, white,