We are talking about plastic that is used for 3D printing. Engineers added tritiocarbonate to the epoxy resin. It allows you to re-arrange the nanoscopic connections. This allows you to restore damaged parts. To start the self-healing process, you just need to send ultraviolet rays to the breakdown site. It takes an hour to fix it.
Scientists believe that their development can help in the task of reducing plastic waste. After all, plastic products can be easily restored, and a person does not have to replace a broken thing. Of course, this all applies only to products printed on 3D printers, and so far we do not use many such things.