Injection machine is a kind of moulding equipment that makes thermoplastics or thermoset plastics into plastic products of various shapes by means of the plastic mould and can meet the demand of aviation & aerospace and engineering machinery fields for super-large plastic products. Large nodular iron casting template is the key component of injection machine, which can only be developed and manufactured by a few domestic enterprises and DHHI is one of them, with the products covering series injection machine templates of 244~8500t clamping force. DHHI has successfully developed and manufactured many types of injection machine templates with a 6000~8500t clamping force for European, North American and domestic customers, providing powerful technical support for development of large injection machine industry of China.