"耐火陶瓷纤维" can be translated into English as "refractory ceramic fiber" or "RCF" (as an abbreviation in some contexts).
"Refractory" means capable of withstanding high temperatures without melting or decomposing.
"Ceramic fiber" refers to a type of fiber made from ceramic materials, which are known for their heat resistance and other desirable properties.
So, "refractory ceramic fiber" accurately describes the material that is both ceramic in nature and capable of withstanding high temperatures.