Ningxia biyuan activated carbon co., ltd sells filter material magnetite iron ore sold as follows Iron content: 60.01% - 66.50% iron (inclusive) Moisture: up to 10.00% Alumina: up to 4.00% Silicone: up to 9.00% Phosphorus: up to 0.15% Sulfur: up to 0.07% Silica: 4.50% Two alumina: 2.00% Ningxia biyuan activated carbon co., ltd. Is a professional manufacturer and has about eight years of different filter media production and domestic historical trade. Now we are committed to developing our international trade. We adhere to the principle of "integrity management, quality service". Our employees are professional and sincere, and our prices are fair. Look forward to working with you.