Shanghai GM
Shanghai GM-Wuling (a subsidiary of Shanghai GM, not a direct subsidiary of Shanghai Auto)
Roewe automobile
Zhonghui automobile (mainly large trucks, buses and commercial vehicles)
Ssangyong motor (acquired by a Korean company, its main products are SUVs, luxury cars and large trucks. At present, some models are ready to be produced in China, and imported Korean cars have also begun to be introduced into China.
Shanghai auto finance company (I estimate it is a financial company that solves the capital problem of the enterprises under the group)
Shanghai Automobile Trading Company (distribution of foreign medium and high-grade automobiles and parts)
Pan-Asian Automobile Research Institute (the product of the cooperation between Shanghai Automobile and General Motors, the research and development of new energy vehicles, and the small modification work of American models produced in China, also known as the secret organization).
And many joint venture auto parts enterprises. For example, Yanfeng Visteon (this company seems to have a separate subsidiary besides engine system and braking system), Delphi (air conditioning system), and so on.