Boeing broke ground on an expansion that will double the size of a joint venture factory that produces composite plastic aircraft parts in Tianjin, China.

Boeing broke ground last week on an expansion that will double the size of a joint venture factory that produces composite plastic aircraft parts in Tianjin, China.

Boeing is investing $21 million in the expansion of Boeing Tianjin Composites, a joint venture with Aviation Industries of China (AVIC) that manufactures composite panels for airplanes.

Carolyn Corvi, vice president of airplane programs at Boeing Commercial Airplanes, said the investment is a “major step toward expanding our footprint in China” and will enable “our Chinese partners to enhance and leverage their commercial capacity and capabilities.”

Boeing acquired a majority stake in the joint venture in July and has bought rights to the land adjacent to the facility, located in the New Binhai area of Tianjin.