glyph; gray; icon; white background; pipes; real estate; business; construction; city; structure; architecture; town; urban; district; pollution; ecology; environment; factory; waste; industry; environmental; plant; industrial; ecological; technology; chemical; smoke; production; manufacture; toxic; manufacturing; pollute; power; fabric building; company; power plant; fabric; work; buildings; technical; craft; isolated; pictogram; round; donut; selected: Bilder zum Thema glyph; gray; icon; white background; pipes; real estate; business; construction; city; structure; architecture; town; urban; district; pollution; ecology; environment; factory; waste; industry; environmental; plant; industrial; ecological; technology; chemical; smoke; production; manufacture; toxic; manufacturing; pollute; power; fabric building; company; power plant; fabric; work; buildings; technical; craft; isolated; pictogram; round; donut; selected bei ClipDealer