It has good thermal insulation which is based on the thermal conductivity (λ=0.043W/m2K) of glass?wool.It also has excellent fireproof?performance and it can resist over 1000 ℃.
The highest temperature that fireproof glass wool can resist is 200 degrees, so it can be used for a long time. It is difficult to estimate the specific time. Generally, it can endure three months if it is used for eight hours every day.
It is certain that A level is the highest. A level indicates that it is non-combustible. Level B indicates that it is fire?retardant. Rock wool can resist 800 ℃ and glass wool can resist 450 ℃. The hest perservation effect of matetials of B level is relatively better.
