This product is made of high temperature resistant fiber by coated with heat-radiation proofing material aluminum foil , and it could protect outburst of molten iron, molten copper and molten aluminum, and spoil of high temperature or fire; it could protect spoil of continually putting under the high temperature of 300℃, it could work for 5-10 minute, and under the condition of 700℃ it could work for 15~30 seconds.