Your preferred tea mug may very well be product of ceramic. Ceramic is an effective thermal insulator, keeping your drink hot for longer than an everyday glass would. Mineral wool refers to a few differing types of insulation, like fiberglass made from glass that has been recycled, or rock wool https://emiliouslao.azzablog.com/35000780/new-step-by-step-map-for-soundproof-windows