Washington imposed sanctions on two individuals from Taiwan and three Chinese entities for activities tied to North Korea, the US Treasury said in a statement, APA reports citing Sputnik.
It also sanctioned the Panama-registered ship the Shang Yuan Bao.
According to the US Treasury, the latest sanctions target a shipping network involved in ship-to-ship transfers with North Korea.
US Secretary of State Mike Pompeo earlier expressed hope that North Korean leader Kim Jong-un was committed to denuclearising his country, saying that otherwise, the US would "continue to keep on the sanctions that are the toughest in all of history".