Newly released surveillance video shows an attack on a Queens man who was beaten and robbed by a trio of thieves.

Police believe the men began their crime spree shortly before 11 p.m. on March 9 — two days before they savagely beat and robbed a 34-year-old man — on Queens Boulevard near 40th Street, authorities said late Wednesday.

The men approached a 62-year-old man and sprayed him with silly string before repeatedly hitting him in the head and back with a belt, police said.

Just a half a mile away, on March 11, the brutes attacked 34-year-old Ying-Sheng Lin at the corner of Greenpoint and 48th avenues, while he was on his way at work, Lin told the Post on Thursday.

“Three guys came up…yelling to me,” he recalled. “I said, ‘What are you guys doing?’ And the other guy just punched my face,” he said, as he motioned the swing of a punch.

“I fell down, and the other two people came out, just stepped on my face, kicked on my head. I think I passed out [for] like 10, 15 minutes,” he said, in broken English.

The trio rummaged through Lin’s pockets and took approximately $2,400 worth of his stolen goods, including a $1,200 Apple iPhone X, a $400 leather wallet, $200 Apple AirPods and about $600 in cash, cops said.

“I feel really bad,” he recalled. “I’m thinking about when it happened to me — I’m thinking, ‘Oh, am I gonna die right here?’ I’m thinking about my family, my girlfriend.”

Lin spent a day in the hospital and said he’s still recovering. Meanwhile, his attackers ran off, and struck again on Saturday.

Around 2 a.m., they were spray-painting parked cars near 39th Avenue and 46th Street when a 21-year-old man confronted them about what they were doing — prompting one of them to punch him in the face, cops said.

The most recent attack, from Monday, was the most violent.

A 45-year-old man was walking to work around 1:20 a.m. when they stabbed and slashed him before stealing his cell phone, wallet and backpack, police said.

The victim was rushed to Elmhurst Hospital Center in serious, but stable condition.

Police late Wednesday provided additional photos and videos of the suspects, who are still on the loose.