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.

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At home DIY heat insulation has never been easier! Home Intuitions 12 inch x 24 inch x 1 inch thick ceramic fiber insulation sheets are flexible, cuttable and easy to install for even the inexperienced home do it yourselfer. The insulated sheets are rated up to 2500 degrees Fahrenheit, making them suitable for most at home and commercial heat insulation needs. The convenient size means less cutting and less waste compared to larger rolls or larger sized sheets.

Home Intuition Ceramic Fiber Insulation Blanket Sheet 12 inchx24 inch, Fire Rated Up to 2500F - High Temperature Fireproof for Oven, Fireplace

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

Kingspan XPS available in California at Foam Sales Group

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High Temperature Thermal Insulation Alumina Silicate Fire Board For Wood Stove And Fireplaces - Buy High Temperature Thermal Insulation Alumina Silicate Fire Board For Wood Stove And Fireplaces Product on

China Customized Ceramic Fiber Thermal Insulation Board Manufacturers, Factory - Free Sample - SEFU

What ceramic fiberboard is more suitable for fireplace insulation?

Can I tile 12x24 ceramic on plywood for my Wooden stove podium : r/Renovations

Simond Store Ceramic Fiber Insulation Roll, 2400F 1315C 1 X 24 X 25', High Density Fireproof Insulating Blanket for Wood Stoves

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Is ceramic fiber board necessary?