As an example of the use of fire bricks (Fire Brick) that Harijaya Insulation Selling is like a sugar factory using Fire Bricks to make Boilers (Steam Boilers) that are useful as heat energy producers that are useful for processing sugar cane juice into sugar crystals that we usually consume daily - day. Fire Bricks will be installed in the Boiler so that the heat energy generated is not directly affected by the Boiler framework so that the life of the Boiler framework becomes more durable. Besides Harijaya Insulation Surabaya Sell Fire Bricks also to isolate the heat reaction chamber with its surroundings to prevent heat loss to a minimum, Separate the fire chamber with the reaction chamber and protect parts of the Boiler, Kiln, Incenerator, Rotary Kiln such as steel plates etc.