About Us

SiAECOSYS is a high technology group consist of several companies which headquarters located in Taizhou City, Zhejiang, China, focus on production,marketing and R&D for electric 2/3 wheeler Powertrain Solution and EV Development Projects. 

Since the founding year 2013, SiAECOSYS built as a sub-brand of QSMOTOR and its exclusive official export channel. Not only provide motor alone, we also  provide controller, display, throttle, charger as motor kit. In 2018, SiAECOSYS starts to offer complete customized electric powertrain solution.

After more than 10 years’ development, SiAECOSYS has entered into the new stage of EV development now. A variety of international famous high speed vehicle models are under developing or under mass production.

Till now, SIAECOSYS provides customized, professional and integrated services to more than 10,000 global partner and clients.


Electric power train solution

Localized Production

Vehicle Conversion

EV Development

EV Assembly

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SiAecosys History

2000 “Quanshun Aluminum Co., Ltd” Product: Wheel rim, aluminum mould.

2003 Quanshun Vehicle Accessories Co., Ltd Products: Aluminum wheels, motor covers, supplier of Bosch.

2006 Quanshun Motor Co., Ltd Products: 500w-14000w BLDC motors.

2013 Set up “Taizhou SIA”, start to expend international market and offer e-driving system.

2018 Set up“SIAECOSYS”league 


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Brand Concept

SIA with new energy industry  as Pioneer in civil technology, we are climbing technology tower for mankind.

Either the base or the spire represents SIA highest masterpiece.



Company Culture

SIA Philosophy: Make it happen 

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