What is the fine-grained topic of the following text: RSI manufacturers a variety of ceramic fiber insulation and high temperature products that handle up to 3000 degrees F.
S Durablanket (2300F) Fiberfrax S Durablanket insulation is a strong, lightweight, flexible needled blanket made from spun ceramic fibers. Only return the topic.
Ceramic fiber insulation and high temperature products manufactured by RSI.