Yihang’s Activated Carbon for Water Treatment: Reliable Solutions for Purification Yihang is committed to providing high-performance activated carbon products for water treatment. Our Granular Activated Carbon and Coconut Shell Activated Carbon are widely used in water purification systems to remove impurities and ensure the delivery of clean water. Yihang’s activated carbon is produced using advanced technologies that optimize filtration efficiency, providing a reliable solution for municipalities, industries, and commercial water treatment applications.