This product is an accessory of seed seeder, which is made by casting alloy cast iron. It is processed by numerical control and surface grinding, and then processed by high-temperature heat treatment, so that the product has strong hardness, better rigidity and better wear resistance, which is more in line with the working environment where the seeder is frequently rubbed during work. The surface is painted, thus improving the corrosion resistance of the product and making the surface more beautiful.