Our company's newest product-Circular Ring Pore Type Graphite In-Kettle Heat Exchanger has been used for many users and received good feedback. It is made by the impermeable graphite block, uses in the kettle which has mixer (or does not have the mixer) for heating up or cooling down the medium in the kettle(or moves in turn); high heat transfer efficiency, compares with the squirrel cage type, its prominent merit is the strong anti- vibration and shock performance, does not have various disadvantages which cause by the material's thermal coefficient difference, therefore the authorized pressure and allowable temperature enhances.