Mainland folk translation is gundam.

The official translation of Hong Kong is Gundam.

The official translation of Taiwan Province Province is steel bullet.

Naturally, there was an official translation when it was introduced into China. Naturally, SD Gundam can only be called the official translation of Chinese mainland. In Hongkong, it is called SD Gundam, and in Taiwan Province Province, it is called SD steel bullet, which has nothing to do with infringement.