How is the round hole needle arrangement connected by "needle arrangement manufacturer"?

Many not the brother shall round hole row needles are very understanding, and some people even don't know the effect of what, it's not weird, but trust we have must understand, about adapter is round hole row needles are a normal part of the adapter, he is equivalent to the heart of the adapter, without it, the adapter will failed to achieve its power, then the round hole row needles is how to join? Let shenzhen Yang Ming below small make up for us to do specific explanation:

There are many factors to think about when the round hole is connected, also need to think about the requirements of touch resistance and mechanical stability. The size and shape of the solder joint depend on the welding skill and the planning of the connector itself. The through-hole and surface adhesion skills are significantly different in these two aspects. The development of connectors is becoming more and more precise, and they are becoming more and more important for welding spots and their functions (especially the functions of mechanical strength and deformation degree of plastic body under load). As a result of circular hole in the connection of the needle must pay attention to these, as far as possible not to affect the use of the advantages of circular hole needle.