Sunwin is a vehicle division of the Chinese company SAIC Motor which provides buses and trolleybuses for bus routes in Shanghai.
[5] These buses were widely introduced for the APEC China 2001 event, and became a symbol of safe, quality, environmental and aesthetic product.
These developments allowed Sunwin to design buses, which through using this chassis, were quieter, conforming to Euro II standards, more durable and being more comfortable.
[4] Based on the newly introduced B7R chassis and body designed in collaboration with Volvo, Sunwin started building CNG buses conforming to Euro III standards in the same year.
This was built with the technologies gained from constructing Volvo buses, and was intended to introduce the bus into more markets, where better products were unaffordable.