Utilizing advanced lost foam precision shell process for stainless steel precision castings, this technology maintains the high accuracy of silica sol investment casting while breaking through weight limitations, capable of producing large precision castings up to 500kg. 316L stainless steel material provides excellent corrosion resistance, particularly suitable for industries with strict hygiene requirements such as medical, food, and chemical. Castings feature excellent surface quality and dimensional accuracy up to CT4-CT6 grade, reducing subsequent processing costs.