We are a company that has corn mill and is interested in buying consumption type FLINT, with properties such as: age: up to 1 year of harvest gravity: Minimum 0.75 t / m ^ 3 Humidity: 14% natural drying or maxsuszenie 110 degrees Celsius broken grains 3% fat content 4% Pollution max hardness min 55% by NHS04 Could you send us sample kg ...