The advantage of applying the utility model is that people does not need to redesign an etchedcircuit card in order to match an integrated circuit of another packing type.
应用本实用新型，可以不必因为匹配另一种封装类型的集成电路而重新设计印刷电路板。
2
Ring-Mounting machine is mainly used for mounting the reference-positioning ring to the tool and removing the ring from it on numerical controlled drill, fraise machine for etchedcircuit card.
装圈机主要用于印制电路板数控钻床，铣床加工刀具装上，卸下基准定位环只用。
3
RD auto pinning machine is used to make reference positioning pin prior to drill the laminated plates of etchedcircuit ca rd on drill machine for etchedcircuit ca rd manufacture premium products.