National Grid plc (LSE:NG.) is reportedly up for sale and investors are eyeing stake in the company. Two separate groups of Chinese investors, including one led by Fosun International Limited (SEHK:656) and another by China Resources Gas Group Limited (SEHK:1193), have also been invited to make final bids by the November deadline, the people, who asked not to be identified as the information is private, told MT Newswires Live Briefs.