A Chinese company has produced the world's first unmanned, amphibious commercial aircraft, with plans to use it to deliver goods, transport supplies to islands and detect submarines, according to the manufacturer.

Liu Jiandong, founder and chairman of UVS Intelligence System, a privately owned drone-maker in Shanghai, said mass production of its U650 seaplane has begun and will enter commercial operation this year with a Chinese express delivery company and a client in Southeast Asia.

He declined to name the buyers, citing business confidentiality, but said both contracts had "considerable value".