PARIS

Airbus overcame technical toilet troubles and engine delays to win hundreds more plane orders in 2015 than rival Boeing, but a bigger problem may cloud this year for both companies: China’s economic slowdown.

Airbus SA and Boeing Co. are battling to win market share in China, forecast to become the world’s biggest air travel market in a little more than a decade. But concerns about China’s plunging financial markets and slowing growth are rippling throughout Asia, where a growing middle class has driven demand for new airplanes in recent years.

Airbus CEO Fabrice Bregier largely shrugged off the recent market turmoil on Tuesday, insisting that his Toulouse, France-based company is sticking to plans for a new facility in Tianjin next month and to its overall strategy in China.

“We should not mix up problems we can see on the financial markets and the real economy,” he told reporters in Paris, in presenting Airbus’ annual orders and forecast for the year.

Bregier predicted that new U.S. visa policies would boost Chinese air travel, and that Asian middle class demand would continue to grow.

As its economy slows, China is trying to shift its focus away from manufacturing toward consumer spending. That could help increase air travel, but only if the economy does not suffer a sharp drop.

Chicago-based Boeing reached a deal last year to build an assembly plant in China, as the U.S. company tries to match Airbus’s presence in the world’s secondlargest economy.

China, too, is trying to get in on the industry. Chinese state-owned Commercial Aircraft Corp. has unveiled the first plane produced by a Chinese initiative to compete in the market for large passenger jetliners, the C919. Bregier downplayed the potential Chinese challenger.

Airbus executives remain upbeat about the overall aviation industry despite signs that aircraft demand is slowing. Industry association IATA recently lowered its long-term air traffic forecast and warned that low oil prices have hurt prospects in key emerging markets such as Russia and Brazil.

Airbus is ramping up production in 2016, especially of the new A350 wide-body, to keep up with the pace of orders — and to try to catch up with Boeing’s dominance in aircraft deliveries.

Increased automation and “digitalization” — including 3D printing of some plane components — will be key to boosting production, Bregier said.

Airbus said Tuesday that it exceeded its targets in 2015, taking in 1,036 net orders and delivering 635 jets to airlines and other buyers. The manufacturer says it has a backlog of 6,787 aircraft worth $996.3 billion at list prices, though customers usually negotiate discounts.

Boeing says on its website that it took in 768 orders last year and delivered 762 aircraft.