History
R&D lab was established in Jinan. And our first owned factory was founded in Jinan.
Factory with our partner was founded in Weihai.
Another wholly owned factory was set up in Weihai
Jinan Yudong Technology Co., Ltd was founded.
Factory with partner was founded in Heze. And our owned trading company Jinan Yudong Trading Co., Ltd was established.
The Second R&D lab was established in Qingdao.