What showed in the picture is the electric bike part-the electric motor. It plays an important part in the electric bicycle e-bike.

Suzhou Aurora Electric Bike Co., Ltd. It is in the Suzhou XiangCheng economic development zone. Aurora believes strongly in reducing carbon emissions and improving environmental protection, and so is developing E-bikes with Li-ion batteries, and especially folding E-bikes which are very convenient for people to carry. Recently we have developed E-bikes which can be folded in 1 second.