there is nothing special about it. its petg. no different than any other. the esun petg is just the same and far cheaper. all petg is very sticky. a slight amount getting stuck to the nozzle is normal but when it really builds up that is a sign of over extruding. first layers cannot be squished onto the bed as you usually would. the first layer need to go down perfectly at the same height as all the other layers. save your money and just buy esun. the stuff is super. of all the petg's i have tried theirs is about the highest quality.