特殊设计的螺母，适用于安装在PS系统孔上，有一可拆下的插入辅助件，由压铸锌制造。
Specially designed nuts are fit to be installed on the PS system holes. There is a zinc die-casting inserted auxiliary
part that can be detached.
带弹簧片的螺母 Nuts with spring strips
作为插入件所设计的承压弹簧可在PS系统孔中形成可靠的机械和电气连接。
The pressure-bearing springs designed as inserted parts can make reliable mechanic and electric connections inside the PS system holes.
1.Pu发泡密封条，粘漆无妨，烤至180℃，15分钟后才会硬化。
PU frothing sealing strips, no problem if stuck paint. When fired to 180℃, it will harden in 15 minutes.
2.箱体和箱门上都可安装接地线，连接件可以卸下。
The grounding wires can be fixed on case body and case door. The connecting parts can be detached.
3.坚固的用螺丝固定的长方框，每隔25毫米有一个嵌孔，用来固定槽沟、护板、电缆束及线路图插袋等。
Strong rectangular frame fixed by screws, an inset hole every 25cm to fix the slotting auger, guard board,bunches of cables and circuit diagram sidekicks, etc.