The as-yet-unreleased United Nations report details that items including acid-resistant tiles, valves and thermometers were shipped from North Korea to the Syrian government, the New York Times reports.
The U.N. Panel of Experts has previously accused North Korea of aiding Syria's chemical-weapons program, asserting in an August report that Pyongyang had secretly delivered gas masks and other protective gear to the Assad government.
The Syrian government has refuted the report, saying the only North Koreans they have in their country are athletes and sport coaches.
Any such trade between the two countries could allow Syria to keep its chemical weapons while providing Pyongyang with funds for its nuclear and missile programs, The Times reported.
Syrian military outright denied the use of "any chemical or toxic substance" in Khan Sheikhoun, and also emphasized on the fact that the military "has never used them, anytime, anywhere, and will not do so in the future".
In both countries, the scions of repressive dynasties - North Korea's Kim Jong UN and Syria's President Bashar Assad - have repeatedly demonstrated a willingness to impose enormous suffering on their own people, who diminishes the power of worldwide sanctions to rein them in, observers noted. Syria renounced chemical weapons and agreed to the supervised destruction of its declared chemical-weapons arsenal in 2013, but the Syrian military has continued to use small amounts of sarin and other toxins in the country's civil war, apparently from hidden or reconstituted stocks.
Syria answered the experts' questions about North Korean involvement.
The panel said it received documents in July 2017 showing Corst shipped banned goods to a researcher at Syria's Scientific Studies Research Council, which the US says is the government agency responsible for developing and producing non-conventional weapons and the means to deliver them.
The report indicates major flaws in worldwide efforts to isolate both countries, and the new evidence could dampen efforts to bring North Korea to the negotiating table following a diplomatic detente at the Winter Olympics in South Korea.
The latest United Nations report, as detailed by The New York Times, broadly correlates with tactics the world body's investigators have previously uncovered in monitoring global sanctions, Solomon said. Ltd, "was the consignee in the attempted transfer of prohibited nuclear-related items in 2012".
In 2015, Myanmar told the United Nations that it had only "normal diplomatic ties" with North Korea.