Super Kfx DNA Polymerase is a rapid and efficient high fidelity DNA polymerase with 5’-3’DNA polymerase activity and 3’-5 ’exonuclease activity. The enzyme is modified by other high-fidelity enzymes, adding unique extension factor and specific promotion factor, which greatly improves the amplification ability, overcomes the defects of ordinary PCR amplification ability, low yield and slow amplify speed, and shortens the reaction time. This product can be used for the amplification of common fragments, long fragments and other complex templates. The 3’ ends of the amplified PCR product do not carry "A" base. If T/A cloning is needed, it is necessary to add" A" to the end of the PCR product for cloning. This product is suitable for gene cloning, NGS library preparation amplification, gene site-specific mutation, SNP and other amplification experiments.