BRIEF-Four bidders and U.S. partner Western Digital competing to buy Toshiba's memory chip unit- Nikkei
May 25, 2017 at 18:03 PM EDT
* Toshiba told Sumitomo Mitsui Banking., Mizuho Bank, other lenders it will begin negotiating with four suitors that submitted second-round bids for Toshiba Memory - Nikkei
