A friend introduced me to the work of Zhengyang Electronics. Is this company reliable? Is it a pyramid scheme?

The job of Zhengyang Electronics introduced to you by a friend means that it is reliable if the friend also works in it. If the friend doesn't work in it, he doesn't know whether your company is good or not. In this case, don't choose. If the friend works in the factory, it means that it is not a fraud company. It is best to know clearly before choosing.