China's state-owned Tsinghua Unigroup intends to acquire a 51% stake in Taiwan-based NAND flash device controller supplier Phison Electronics' subsidiary in Hefei of China's Anhui Province, according to a recent Chinese-language Commercial Times report.

Being traded on the Taiwan Stock Exchange (TSE), Phison in July 2015 opened its China-based subsidiary in Hefei dedicated to developing solid-state drive (SSD) controller technology.

Phison has issued a company filing with the TSE saying the company has no specific plans regarding equity investments by China-based firms, before government policies allow. Nevertheless, Phison is keeping an open attitude and will explore possibilities for improving its competitiveness, the company said.

Phison's share price soared by the TSE's daily 10%-limit to close at NT$244.50 (US$7.46) on December 15.