4.4 如果买方工厂电源不稳定，必需加装稳压器以供应稳定电压给钉机用。

    If clients factory power supply is unstable, must install voltage regulator to supply stable voltage to this stitcher machine

4.5 本机必须安装地线，可避免雷击而使机器受损。尤其是工厂地面为绝缘者更为重要！

    This machine must install ground wire, can avoid lightning stroke to damage the machine, in especial for insulation ground

五、机器安装 Machine installation