This article provides a comprehensive comparison of Vacuum Mold Casting and 3D Printing as rapid prototyping methods. It explains their unique processes, cost structures, material capabilities, and suitable applications for prototypes and short production runs. The discussion helps manufacturers and OEM service providers choose the optimal method based on project priorities like surface finish, design complexity, batch size, and turnaround times. By leveraging both technologies, businesses like Shangchen can deliver efficient, high-quality prototyping and low-volume manufacturing solutions tailored to global brand requirements.