Below is a summary of the 10 energy companies:

Delfin Midstream LLC confirmed its founder and chief executive officer Frederick Jones and chief financial officer Matthew Weil will join the delegation to "showcase" the company to state-owned and large private Chinese companies.

"We're on a mission to talk to Chinese companies to get something signed up," said Jones, a founder shareholder of Marc Rich + Co, now Glencore (>> Glencore).

The company is developing the first floating LNG vessels in North America, which will convert gas into LNG for export off the coast of Louisiana.

Alaska Gasline Development Corp (AGDC) said it had no information to release.

The company is building a gas treatment plant, an 800-mile (1,287 kilometer) pipeline to south central Alaska for in-state use, and a natural gas liquefaction plant in Nikiski to produce up to 20 million tons of LNG per year for export.

In April, Xi visited Anchorage where he met with Alaska Governor Bill Walker and AGDC president Keith Meyer on his way back to China from a visit to Trump's Florida home. They discussed how Alaska and China are positioned for a long-term LNG trading relationship, according to the company's website.

Cheniere Energy Inc (>> Cheniere Energy, Inc.) declined to comment.

Based in Houston, the company owns and operates the Sabine Pass, the first LNG export terminal in the United States. Earlier this year, it opened an office in Beijing in a bid to snare long-term deals with Chinese buyers.

Texas LNG Brownsville LLC declined to comment.

This Mid-sized LNG export terminal in Texas will have capacity of 4 million tonnes per year. The first phase is due to launch in 2022/23, followed by the second phase in 2024.

Its website says company has signed six non-binding term contracts with Chinese and Southeast Asian customers for cumulative volumes of over 5.5 million tonnes per year.

Freepoint Commodities declined to comment.

The merchant trading firm, headquartered in Stamford, Connecticut was founded by David Messer, who ran power utility Sempra's vaunted commodities division. It has recently expanded in Asia, hiring traders and staff to meet demand in China.

Sempra Energy (>> Sempra Energy) declined to comment.

The San Diego, California-based energy company owns and operates electric and gas utilities in the United States and South America and develops long-term contracted energy infrastructure in the United States and Mexico.

SolarReserve LLC said this trip will be its second Commerce Department trade mission to China.

The privately held company based in California develops large-scale concentrated solar power plants. It has solar power and photovoltaic solar power projects in the United States, South Africa, South America and Australia.

The company hopes to "better understand the renewable energy goals, requirements and timelines in China, advance relationships with key stakeholders to enable export of our U.S. developed technology and services to the region, and heighten our awareness" of the company in China, a spokesperson said.

Westinghouse Electric Co LLC declined to comment and referred questions to the Commerce Department. The U.S. nuclear power company, now in bankruptcy, is seeking to sell itself, with a deal likely valuing it at close to $4 billion.

Arclight Capital Partners LLC, a private equity firm that targets midstream power and production, did not respond to request for comment.

Air Products (>> Air Products & Chemicals, Inc.) did not respond to request for comment.

Company makes industrial gases, including hydrogen, nitrogen and oxygen.

(Reporting by Michael Martina and Josephine Mason in BEIJING, Devika Krishna Kumar, David Gaffen and Scott DiSavino in NEW YORK, Gary McWilliams and Ernest Scheyder in HOUSTON, Nicola Groom in LOS ANGELES, Julie Gordon in VANCOUVER, Tom Polansek and P.J. Huffstutter in CHICAGO; Editing by Bill Tarrant)