New York (CNN) Boeing on Saturday delivered its first 737 airliner from its new factory in China -- a debut that comes amid a 90-day truce in the US-China trade war.

The 100-acre completion site in in Zhoushan, where workers install interiors to 737s built in Seattle for sale in the Chinese market, is part of the US aerospace company's plan to strengthen ties to what will soon be the world's largest aviation market.

The Chinese plant is the first of its kind for Boeing ( BA ) outside the United States. It is operated as a joint venture between the company and China's Commercial Aircraft Corporation (COMAC).

The first 737 to roll out of the plant was delivered to Chinese carrier Air China on Saturday.

"This is a significant milestone of Boeing's efforts to deepen its footprint in China, as well as to support the growth of China's airline industry, opening an era of the collaboration," Zhao Yuerang, president of COMAC, said in a statement.

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