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Brown Iron Oxide is a composite inorganic pigment made from iron oxide red, yellow and black through mixing, grinding and high-temperature calcination, with total iron oxide content ≥90%, color fastness ≥8 grade and light fastness ≥7 grade. With particle size 0.3–6μm, it is natural brown in shade, with excellent weather resistance and hiding power. Widely used in architectural coatings, colored asphalt and antique brick coloring, it can create a natural retro visual effect, and is the core pigment of brown decorative materials.