China is getting the coronavirus crisis under control, Apple CEO Tim Cook told Fox Business, adding that his company’s plants there have started reopening.

Cook sounded upbeat about the crisis, saying that “if you look at the numbers” of new coronavirus cases in China, “ they’re coming down day by day by day. So I’m very optimistic there."

Apple puts together most of its iPhones in China and buys a large number of parts there. Cook said that “in China, we have reopened factories, so the factories were able to work through the conditions to open.”

Cook’s remarks are one of the first indications that China’s supply chain has started to recover after Apple (AAPL) warned last month that it will not meet its March quarter sales forecast because the coronavirus outbreak could harm iPhone supply worldwide and lower demand in China due to the crisis, according to CNBC.

Cook, however, did express concern about the spread of coronavirus cases to other places around the world, saying it remains to see how that unfolds.

But even with that worry, the Apple CEO appeared confident, calling the coronavirus a “temporary condition” and “not a long term kind of thing.”

He even painted a rosy picture of the lower value of his company’s stocks, saying “Everyone knows we’re buying shares and when the stock is lower you get more shares for the same money.”

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