In the fourth batch (material) bidding project of the project directly under the state grid corporation of China in 2012, the company won the bid for the outdoor ± 1200/30ma dc voltage generator of the extra-high voltage corona cage of China national electric power research institute. And signed the contract the day before.

The outdoor ± 1200/30ma dc voltage generator will be installed and operated in the state grid corporation of China's dc uhv test base in changping district, Beijing. It is the main equipment for the dc uhv electromagnetic environment test and research.