Ключевые слова: 1st may, background, banner, building, construction, creative occupation, day, design, engineering, equipment, hammer, hand, happy, home, industrial, industry, international, labor, labour, man, may, may day, mechanic, national, person, plier, plumber, poster, professional, repair, safety, screwdriver, sign, tool, top view, wooden, work, work tool, worker, workshop, wrench, wrenches,