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Ingas and Cryoin, two Ukrainian companies that produce an estimated 45% to 54% of the world’s semiconductor-grade neon, confirm they have halted operations (Alexandra Alper/Reuters)

Alexandra Alper / Reuters:
Ingas and Cryoin, two Ukrainian companies that produce an estimated 45% to 54% of the world’s semiconductor-grade neon, confirm they have halted operations— Ukraine’s two leading suppliers of neon, which produces about half the world’s supply of the key ingredient for making chips …