Zhengzhou Sinco can supply investment casting in a wide range. The material can be carbon steel, stainless steel, and alloy steel. Also, Sinco can supply die castings in a wide range, it include, aluminum die casting( High pressure part, it can take more than 30 kgs pressure), zinc alloy die casting etc, the small part we had made is about 0.05 kgs, the bigger part we had made is about 5 kgs.