Based in California, Western Digital Corp is a developer and manufacturer of storage solutions under the HGST, WD and G-Technology brands. Tsinghua Holdings is a Chinese state-owned corporation, funded by Tsinghua University in Beijing with a wide range of subsidiaries in the technology industry in China. This acquisition is done through its subsidiary Unisplendour. (Back in May it paid $2.3 billion for 51% stake in Hewlett-Packard's data-networking business in China).
Tsinghua Holdings is listed in the Chinese Private Equity and Venture Capital Directory with the code SE892
More details follows: