➀ The UK government has decided to invest £20 million in a gallium arsenide semiconductor factory in Durham County to prevent it from closing or falling into foreign hands; ➁ The factory, located in Newton Aycliffe, is the only facility in the UK capable of manufacturing gallium arsenide semiconductors and was previously owned by Coherent, an American supplier; ➂ The factory supplies critical components to the UK military, including radar power amplifiers for the Royal Air Force's Typhoon fighter jets; ➃ The government's intervention aims to maintain the defense supply chain, support employment in the North East, and protect key military technology.