Specifications: 5kg/drum; 20 kg/carton; or packed according to demand. Performance and application: brushing launder, filter box, nozzle plate and surface of hot-top casting functional materials that are in contact with molten aluminum. Made of high-purity BN raw material, it effectively keeps functional materials from sticking to aluminum. After opening the cover, dilute with distilled water/paint = 3-6/1, stir evenly and spray or brush. After drying, wipe it with a soft cloth to shine.