How to write the English company name of Chuangzhi Advertising Co., Ltd.?

There are two common types of advertising companies.

advertising co. Ltd.

The company name is generally in pinyin or homophonic, and it is best to use pinyin to avoid duplication with other companies.

So: chuangzhi advertising co., ltd

Or Chuangzhi Advertising Co., Ltd.

Supplementary question: isn't the advertising company? How do you write it in institutional terms?

PS: I just checked some advertising companies on Baidu, and the agents are also using them.

In that case, let's say Chuangzhi advertising agency.