■多次折弯的箱口，能防止开箱时水和杂物进入箱体;
                                           ■冷轧钢板焊接箱体，非常坚固;
                                           ■门上特制的无接缝发泡密封胶条，具有好的密封性能;
                                           ■一次成型的箱门褶边，具有美观的外表和很好的强度;
                                           ■箱门可按用户需要改装成左开或右开 ;
                                           ■箱体内安装板深度可以调节;
                                           ■箱体上预装接地螺栓，门上有接地钉;
                                           ■箱体后部预钻安装孔，不须另行开孔.