Iron oxide black is black powder from reddish black to very bluish deep black, which owns high quality, tinting strength, outstanding light and weather fastness, it will not fade for very long time. Construction grade iron oxide black is recommended for paving stones, color concrete blocks, interlocking bricks, split brick, color harder, roofing tiles, rubber bessel, slurry, color asphalts, permeable asphalt concrete, sports racetracks, wood-plastic floor WPC etc.