When sourcing a tofu making machine, you must prioritize production capacity (L/h or kg/h) to match your business scale. Key components include the grinding and separating system, where a high-speed motor ensures a high extraction rate of soy milk. Ensure the machine is made of Food-Grade Stainless Steel (SUS304/316) to prevent corrosion and ensure hygiene. Additionally, check the heating method—steam heating is generally preferred for large-scale production to prevent burning the soy milk, while electric heating is suitable for smaller, compact units.