... in industrial furnaces, fireplace, boat … of metallurgy, construction, petrol, chemical, machinery, power, light industries.Vermiculite insulating board characterizes ... smoke, not toxic, no smell, A grade fireproof board.Physical and Chemical PropertyAppearance: gold yellow / Grayish whiteSmell: ... : 1100 degree CelsiusToxic content: none, no-use board can be discharged as common construction waste, no ...