Backed by £125.4m of Welsh Government funding, the deal is the biggest single investment in the region and is expected to create 10,000 new jobs over the next 15 years.
Gyda chefnogaeth £125.4m o gyllid Llywodraeth Cymru, y fargen hon yw'r buddsoddiad unigol mwyaf yn y rhanbarth ac mae disgwyl iddi greu 10,000 o swyddi newydd dros y 15 mlynedd nesaf.