German STEMMANN was established in 1912 and is affiliated to the WABTEC Group in the United States. It mainly produces power and data transmission components for sliding components. The slip ring produced by STEMMANN has more than 20 years of production and application experience in the wind power field. Since the earliest supply of GE to tyres, it has gradually started to provide supporting facilities such as Vision, Dongqi, Dalian Huarui, Jinfeng Technology, Beijing Guodian, Changzhou Rail, Shanghai Electric, Chongqing Haicheng, CRRC Wind Power, Yunda Wind Power, Sany Heavy Energy, etc. As of now, Kitten New Energy has delivered more than 30,000 sets of slip rings to Chinese customers, covering 1.5MW, 2MW, 2.5MW, 3MW, 3.6MW, 4MW, 5MW, 6MW and other mainstream domestic wind turbines. The slip ring has stable quality, long service life and low maintenance cost.