It added in its report: "Since these facilities are believed to have played an important role in the development of technologies for the North's intercontinental ballistic missile program, these efforts represent a significant confidence-building measure on the part of North Korea".
Sohae, on the northwest coast of North Korea, has been used to test rockets, with the aim of putting a satellite into orbit.
"This could (and that's a big could) mean that North Korea is also willing to forgo satellite launches for the time being as well as nuclear and missile tests".
He criticized the media's use of anonymous sources and publishing reports "without ever asking me".
South Korean President Moon Jae-in and North Korean leader Kim Jong-un had signed the Panmunjom declaration after the historic summit on April 27.
His rosy assertions were mocked by Democrats, who argued that little had changed and suggested the president was naive for thinking a regime with a history of delay and obfuscation would change its practices.
The objective of the advisory is to "highlight sanctions evasions tactics used by North Korea that could expose businesses - including manufacturers, buyers, and service providers - to sanctions compliance risks under US and/or United Nations sanctions authorities", it reads.
Trump OK'd disclosure of Russian indictments
As he affirmed his support for United States intelligence agencies, the lights went to black in the White House conference room. Those who spoke with The Associated Press largely didn't buy his change in tone - or said it didn't matter.
It wants Mr Trump to start lifting sanctions in return, although U.S. officials say Mr Trump is privately frustrated about the slow progress since he met Mr Kim face to face last month.
But in the days and weeks since then, USA negotiators have faced stiff resistance from a North Korean team practiced in the art of delay and obfuscation.
The president also called the rights issues a "rough situation over there" and said he was ready to "write a new chapter between our nations".
According to UNSC sanctions, member states are prohibited from issuing any new work permits for North Korean laborers in their jurisdictions and all North Korean workers are to be sent back to the DPRK by December 22, 2019.
The images published by 38 North, a US-based website focused on North Korea that is affiliated with the Stimson Centre in Washington, were taken by the commercial companies Digital Globe and Airbus Defence and Space on July 20 and July 22, respectively.
After that summit, Trump said Kim had pledged to dismantle a missile site.
Observers say the North apparently wants to gain the South's support in the negotiations with the U.S., as the 65th anniversary of the armistice agreement on Friday approaches.
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