In August, 1992, the first inverter with GTR as the main power component was successfully in trial operation, marking WindSun’s early access to variable frequency and energy saving ofasynchronous motors in China.

Li Ruilai (former chief engineer) traveled to Beijing on a business trip and recognized the product of the inverter. The strong consciousness prompted Li Ruilai to make up his mind to develop the inverter.

 The state-owned Wenshang radio factory。When the Wenshang Radio Factory was established, six Tsinghua graduates, one overseas student studying in the Soviet Union, and many graduates from Zhejiang University and Nankai University were assigned here. At that time, the Wenshang Radio Factory, which was in its initial stage, gathered a group of young talents from all over the world. The talent lineup was quite luxurious, and even now it is a very powerful talent team.