After several 32F are dismantled, it is unlikely that the structure inside will be exported all the time. Possible reasons are:
1. In one case, the thrust of the relay is loose. In extreme cases, the relay may be blocked. If you are testing, its pull-in voltage and so on may not be available.
2. In addition, the angle of his power spring was leveled by the impact of external force, and the restoring force was not enough. It may become loose again during transportation. It is best to measure whether its pull-in voltage is very low (below 4.8V), which may be the case if it is very low.
You should be asking about the difference between Hongfa's original factory and counterfeit goods, right? In fact, there is no way to distinguish this kind of relay products, only to see whether the printing is clear or whether the signs are the same size. You'd better go to Hongfa's website to check the mark and confirm it.