The Trump administration Wednesday launched a new effort to crack down on deadly trafficking of fentanyl into the United States by seeking help from private businesses.

White House officials issued guidance to businesses detailing the patterns of how synthetic opioids are manufactured from China and shipped illegally into the United States. They’re asking private businesses — such as financial institutions, social media companies and shipping services — to be on the lookout for specific trafficking patterns to alert the feds.

“We’re releasing four advisories aimed to help the private sector prevent their supply chains from being hijacked by fentanyl traffickers,” said Kellyanne Conway, counselor to the president. “We need private sector partners to work with us.”

The four advisories tackle manufacturing, marketing, movement and money behind the illegal fentanyl trafficking.

The government outlines red flag behavior for companies to look for, such as certain equipment and chemical purchases needed in a fentanyl lab, dark web and drug marketplace lingo, shipping documentation clues on packages and money transfer schemes.

On Wednesday the Treasury Department designated two Chinese nationals and a China-based trafficking organization as drug kingpins for shipping hundreds of packages of synthetic opioids to the US through commercial mail carriers and online sales.

The White House is sending a delegation to China in about three weeks, which will include US drug czar Jim Carroll and leaders from Customs and Border Protection and the United States Postal Service. They’ll meet with their Chinese counterparts on cooperation in cracking down on the trafficking, administration officials said Wednesday.

Fentanyl is so much stronger than heroin that small amounts ingested can be deadly.

The Centers for Disease Control reported 70,200 drug overdose deaths in 2017, but the sharpest increase occurred among deaths related to fentanyl with more than 28,400 deadly overdoses.

“Under President Trump we will hunt down these drug traffickers,” Carroll said Wednesday. “We will stop them from bringing poison into our country and killing our kids. We will not rest. We will leave no stone unturned and under this Administration we will bring them to justice.”