As an affiliated enterprise of Shanghai Dafeng Computer and a wholly-owned subsidiary of Taiwan Province Quanta Group, its main products are related parts of notebook computers.
It seems to be in Songjiang, too.
2. Shanghai Yixin Industry Co., Ltd. Yixin Zhanxin
But they don't specialize in making laptops. They make some laptop shell modules, which seem to be enterprises in Singapore.
No.2666, Zhongchun Road, Zhuanqiao Town, Minhang District