Coil coating consists of base material, adhesive, pigments and fillers, additives and volatile components. According to the purpose, it can be divided into primer and top coating. Generally, aluminum only needs a single coating, while galvanized steel and cold-rolled steel require primer and top coat. Rucca has developed this integrated feeding, dispersion and grinding system(dispersing machine + sand mill), which is mainly used for top coats in coil and container coatings, bringing solutions of different "dimensions" to the coatings industry.