exin (type)/yixinyi and xing are pronounced as yixin. It means simple and easy to carry out. It can refer to lightness, easy portability and simple operation. Electronic products are originally designed to change people's lives. Simple. It can also refer to a strange appearance (similar to a special shape, O(∩_∩)O~)
The English name can be e-xin e-sin, and brand names are often transliterated. How to spell it is unclear So many norms