Last year, Wisco produced 50,000 tons of high magnetic induction grain oriented silicon steel, a material that can be used as alternative to similar imports to produce 220KV transformers and whose rolling process is 5 to 6 times more complicated than regular ones. The MIIT has urged the mill to make more contributions to the localization of such materials by developing, in combination with relevant research groups and manufactures, high magnetic induction GO silicon steel for larger 500KV transformers by the end of this year.