It’s pet with glycol added. Pet is the plastic most water bottles are made out of. It’s claim to fame is it’s supposed to print as easy as pla but have the strength of abs. It’s definitely more for functional prints. It can’t compete with pla as far as aesthetics. Light stringing is the nature of the beast. Most of the time a quick rub will knock it off but a lighter is required occasionally to burn of stubborn bits. Has a higher temp resistance too. I believe it’s in the neighborhood of 170 Fahrenheit but I’m not positive. Strength and temp resistance is what drew me to it.
It prints at a higher temp than pla so some printers aren’t up to the task with stock parts. Overture and esun I was printing 250 first layer and then 240-245 for the rest of the print. Current Petg is 235 and 225. I have a couple cr-10s’. They’re supposed to be able to handle it with the stock hot end. But I read the creality all metal hot end was still lined with ptfe. So I’ve upgraded both with direct drive micro Swiss extruder and hot end.