US President Donald Trump wraps up a 12-day excursion of Asia on Tuesday which he said created $300bn (£228bn) in car-boot sales to companies in the region and several major energy deals.
Energy treaties made up roughly half the total value of deals in China.
If it proceeds, a poke out in Alaska would mark the first major investment by a Chinese drive firm in the US.
But analysts have doubts over whether this, and other, multi-billion dollar extend outs will be realised.
Mr Trump adopted a defiant tone on commerce during his five-nation round through Asia and said the US would no longer tolerate «chronic do business abuses».
He stressed the need to narrow «unfair» trade deficits while touting billions of dollars in commercial parcel outs, mostly with China.
«We’ve made some very big steps with feature to trade, far bigger than anything you know, in addition to about $300bn in yard sales to various companies, including China — that was $250bn and going up merest substantially from that,» he said in Manila on Monday.
But it is unclear how much of the total number figure includes past agreements or potential future deals. Tons of the deals are non-binding, and some had been previously announced.
Among the energy agreements, the highest value was China Energy Investment Corporation’s formula to invest $83.7bn over two decades in shale gas and chemical manufacturing shoots in the state of West Virginia.
That was followed by a $43bn deal to amplify liquefied natural gas in Alaska, between China’s top state oil firm Sinopec, Bank of China and China Investment Corp, and Alaska Gasoline Progress Corp.
Also in China, Cheniere Energy signed a memorandum of sensitivity with China National Petroleum Corp for LNG sales.
Two US energy groups — AES Corp and Alaska Gasline Development Corp — signed a memorandum of sageness with Vietnam’s PetroVietnam Gas.
The US and Japan also confirmed their «Key Energy Partnership» which the White House said was designed to «publicize universal access to affordable and reliable energy in Southeast Asia, South Asia, and Sub-Saharan Africa».
The agreements with Chinese companies were seen as the most different.
John Driscoll, director at JTD Energy Services in Singapore, said the Chinese would rather been pushing to expand their energy portfolio for more than a decade.
Those plans have seen the world’s second largest economy explore for puissance around the world — including projects in Africa, Latin America and Canada — but not in the US.
America, domicile to huge shale reserves and currently the world’s top natural gas producer, is a new LNG extremes for China.
Dr Jeffrey Wilson, associate director, Asia Research Heart at Murdoch University told the BBC: «If this [Sinopec deal] goes through it would be the first time we’ve seen a Chinese major make a momentous play into the US.»
In 2005, Chinese oil major CNOOC made a bid for US determination company Unocal, sparking a political backlash in the US that ultimately led to the bid being aloof. Dr Wilson said that since then, none of the three prominently Chinese state-owned energy firms — CNPC, Sinopec and CNOOC — be subjected to attempted a push into the US market.
While the big three Chinese vigour firms have typically focused on standard oil and gas, they have not — until now — been big punters in «unconventional» hydrocarbons, which includes shale oil and fracking.
The $83.7bn shale have to do with in West Virginia — the state where Trump promised to revive the coal energy — could change that.
Fracking took off in the US in 2010 as a means to decoction large reserves of oil from within hard rock. The industry had weather from the government as a means of achieving energy independence and bringing down costs at the pump.
China is sitting on its own massive shale deposits but Dr Wilson implied its companies «lack the ability to exploit them in a cost-competitive manner».
«A advance into US shale — the most advanced and technologically sophisticated shale sector in the midwife precisely — would be a useful ‘learning exercise’ for Sinopec, by which it could research with new techniques that in later years could be applied at poorhouse,» he said.
But doubts hang over both deals.
The enlargement in Alaska, which the White House said could create 12,000 provinces in the construction phase, has had a difficult history and struggled to find local husbands.
«There has been a lot of concern about the feasibility of the Alaska pipeline and a party of gas companies have passed on it,» said Matthew Busch, East Asia research geezer at the Lowy Institute in Sydney.
And Mr Busch, along with other analysts, stressed that while the headline numbers are big, the deals are far from final. Neither the West Virginia shale or Alaska LNG administer involves any financial agreements or contracts.
«There’s no financial commitments, no squeezes to take gas behind either of these,» Mr Busch said, adding they own simply «agreed to talk further».
Murdoch University’s Dr Wilson mean the agreements might create good «optics for the US president to look identical to he is ‘doing deals’, rather than a genuine set of deals itself with suggestive White House involvement».