1禁止对金属，玻璃等硬质材料打孔以免损坏刀具。

    don not punch hard material 1ike metal/g1ass， otherwise it will damage the knives．

    2及时清理排屑纸盒.

    c1ean the wwaste paper drawer regularly．

    3保持清洁干燥，避免受潮。

    keep the machine dry and c1ean．don not 1eave the machine in damp environment．