Ningbo Gravity die casting of AL supplier ,Ningbo Zhenghua Gravity die casting Co.,ltd is one of specialized manufacturer and exporter of various castings including gavity die casting investment casting, sand casting, die-castings. Located in the East of China, Ningbo city which is famous for the second biggest container port in China. The yearly output of various castings is above 12000tons and 1000kinds which are used in metallurgy, automobile, chemical, ship and hardware engineering industry. And the material used for castings include ferrous metal such as stainless steel, alloy steel, ductile iron, etc aluminium, aluminium alloy, zinc alloy, etc. Our products have been sold well in national market and also 60 percent are exported to America, Europe Union et