A Chinese aircraft manufacturer said on Thursday that it has opened its second office outside the mainland in Hong Kong.

The Commercial Aircraft Corporation of China (COMAC) launched its Hong Kong office after establishing one in Singapore on Monday.

The move is seen as a way to expand the planemaker's reach overseas.

On Wednesday, COMAC signed a memorandum of understanding (MOU) with Swire Pacific’s aircraft maintenance business, HAECO, to collaborate on airframe, engine and component services.

"The MOU will enable the two parties to jointly deliver more comprehensive support towards COMAC’s domestic and international customers," HAECO said in a statement.

"This partnership marks a significant step forward in enhancing aircraft maintenance capabilities in the region, ensuring that both organisations can effectively support the evolving landscape of the aviation industry."

HAECO also said the agreements come in response to the growing maintenance demands for COMAC's two commercial aircraft models, the C919 and ARJ21.

There have been two demonstration flights of COMAC's C919 jet in Hong Kong over the past year, but no COMAC planes currently fly to the SAR or have been ordered by Hong Kong-based airlines. (Additional reporting by Reuters)