Generally speaking, it is impossible to determine which is better, Yicheng or vivi, because they show different characteristics in different aspects. For example, in terms of power quality, Weiwei's power quality is better and more stable, and Yicheng's power quality is unstable; However, in terms of service quality, Weiwei electric power service personnel can better meet customer needs, while Yicheng's service quality is low.

Xinwei Power has a good performance in terms of quality, stable power quality and leading technology, while Yicheng is unstable in terms of power quality and general technology. On the other hand, vivi Power's service personnel can better meet the needs of customers and have a good attitude, while Yicheng's service attitude is poor and the service quality is low.

In a word, it is impossible to determine which is better, Yicheng or vivi, because they show different characteristics in different aspects. You can choose according to your own needs and evaluation criteria.