Factory Direct Sales with Carbon Additive Calcined Smokeless Coal Cac Water Treatment Particle Size 1-5mm. Low Sulfur and Ash Content: Features low sulfur and low ash content for high purity carbon products. Versatile Applications: Ideal for steelmaking, water filtration, shipbuilding rust removal, and refractory bricks. Multiple Particle Sizes: Available in 0-1mm, 1-5mm, 3-5mm, and 8-26mm to suit various needs. ISO and CE Certified: Meets international quality standards with ISO and CE certifications. Flexible Customization: Offers full customization, minor customization, and flexible options from samples or designs. Manufacturer Direct Sales: Direct sales from a 20-year experienced manufacturer with own laboratory. Fast Lead Time: Peak and off-peak season lead times are both within 15 workdays.