The first subway trains manufactured by China for Boston’s new Orange Line were recently shipped to the city, its manufacturer said on Monday, China News Agency reported.

The Massachusetts Bay Transportation Authority (MBTA) has displayed the “Christmas gift” from China on its Twitter account.

Testing of the prototype has begun, the agency said, adding that it will take months to test the rest of the trains after they are shipped to the US.

The subway trains rolled off the production line in October.

State-owned train maker CRRC Changchun Railway Vehicles Co., Ltd., a subsidiary of China Railway Rolling Stock Corp, is the first Chinese company to export its subway trains to the United States with complete Chinese intellectual property.

CRRC built its first train manufacturing base in the US in September 2015. The base, which can assemble, test, and provide after-sales service, is expected to come into use at the beginning of 2018 for local production of subway trains.

MBTA forecasts that the new Orange Line will be put into use in 2019.