High-quality carbon steel investment castings are core components of agricultural machinery. Leveraging the investment casting process, they achieve high-precision and complex-structure forming. Combined with carbon steel's excellent strength and weather resistance, they are suitable for heavy-load and harsh working conditions of seeders and other agricultural equipment. With stable dimensions and minimal need for secondary processing, these castings enhance operational reliability, reduce maintenance costs, and serve as an optimal solution for ensuring the high efficiency and durability of agricultural machinery.