What ceramic fiberboard is more suitable for fireplace insulation?

I received an inquiry from Mr. Alan about 1000 * 500 * 30mm ceramic fiberboard in July and I replied Alan immediately after receiving his email.

The advantages of selecting ceramic fiber boards as furnace lining

Why You Should Use Ceramic Fiber Insulation - Ceramic FiberCeramic Fiber

Ceramic fiber boards, Aluminum silicate wool boards

Kingspan XPS available in California at Foam Sales Group

Lowes Fire Board Fiber Proof Pizza Oven Insulation Ceramic Fiber Board - China Ceramic Fiber Boards, Refractory Ceramic Fiber Board

Ultra High Temperature Ceramic Fiber Board 1600°C-1900°C Application

Simond Store VZ4F Ceramic Fiber Board Insulation for Forge, Pizza Oven, and Kiln, 1 Piece - Harris Teeter

China Refractory Ceramic Fiber Board Manufacturers, Suppliers - Factory Direct Price - LUYANG

High Temperature Ceramic Fiber Fireplace Insulation Board - China Insulation Materials, Thermal Insulation

Ceramic fiber hearth board, ceramic board insulation

Ceramic Fiber Board or Fire Brick?