@bixardune @infobeautiful for almost all polymers that really isn’t a concern. That only means you can’t indiscriminately throw everything into a furnace. There has to be some sorting, removing things like PVC or PTFE. Luckily they are generally used in specific products. For most commodity polymers (PE, PP, PS, PET, PC), unless they have weird additives used in specific applications, burning should be fine.