Patented Technology
| Refining technology and device of ductile cast iron（KS furnace） | |
| Domestic
Foreign countries [US・UK・Germany・Korea] |
|
| Thinning technology of pheroidal graphite cast iron（Thinner） | |
| Domestic | |
| Heat resistance improving technology of pheroidal graphite cast iron（Improving the heat resistance） | |
| Domestic | |
| Refining technolog of cast iron（Refining technolog） | |
| Domestic | |
| Impurity metal removal technology of cast iron（MN removal technology） | |
| Domestic
Foreign countries [China] |
|
