The predecessor of Maoming Port Management Co., Ltd. was Maoming Port Administration，Maoming Port Administration was established in 1987，In 2002, it was renamed Maoming Port Management Co., LTD in response to the institutional reform of Maoming City government，It is a city-owned state-owned port production and management enterprise，In December 2012, 100% equity of Maoming Port Operation Co., Ltd. was transferred to Maoming Port Group for free，Become a wholly-owned subsidiary。

Maoming Zhongyou Wanggang Petrochemical Co., Ltd. was established on May 24, 2000. It is a state-owned holding enterprise。After ten years of development, the registered capital and paid-in capital of the company are 50 million yuan, and the controlling shareholder is Maoming Xinlong Development Co., LTD. (state-owned holding company, holding 90%).。The company is one of the first batch of enterprises in Maoming City with national first-class port and port operation qualification. The business site is located in the east side of Shuidong Port, 4Km away from National Highway 325, 68 nautical miles to Zhanjiang, 140 nautical miles to Haikou and 240 nautical miles to Beihai of Guangxi respectively. It is the core area connecting western Guangdong and surrounding port cities。Up to now, the company has developed into a port operation enterprise mainly engaged in storage, loading and unloading of oil products, liquid chemicals and gas. With nearly 100 employees, the company has brought irreplaceable port driving effect to the economy of Maoming's coastal and hinterland。

Maoming Port Development and Construction Co., Ltd. was established on June 9, 2013 with a registered capital of 8.100 million yuan, is a wholly state-owned limited liability company, a wholly-owned subsidiary of Maoming Port Group。

Tianyuan Terminal covers an area of more than 100,000 square meters, with a shore line of more than 400 meters. There are a 30,000 ton comprehensive terminal and a 5,000 ton Class C tanker terminal。Among them, the 30,000-ton comprehensive terminal has a large coal yard and container storage yard, and is equipped with two 25T35M working gantry cranes with 40 tons and one 40T35M gantry cranes (war readiness) as well as a large number of supporting machinery and equipment, with an annual throughput of more than 1.5 million tons。The 5,000-ton class C oil storage terminal is equipped with complete oil handling facilities and 20,000 cubic meter storage tanks, with an annual throughput of more than 500,000 tons。

Guangdong Maoming Binhai Holding Co., Ltd. was renamed from Guangdong Maoming Binhai Municipal Construction Co., Ltd. on September 27, 2012. With a registered capital of 60 million yuan, it is a wholly state-owned limited liability company and a wholly-owned subsidiary of Maoming Port Group。

Guangdong Maoming Binhai Tourism Development Co., Ltd. was established on September 23, 2011, with a registered capital of 20 million yuan. It is a wholly state-owned limited liability company, a wholly-owned subsidiary of Maoming Port Group。