The name of the recruiting unit in the cover letter is correct.

1. If you don't know the name of the person in charge of recruitment, you can use the company name: Dear company name to recruit the team.

2. If you know the name of the person in charge of recruitment, you can use his name: the name of the respected person in charge of recruitment.

3. In a more formal business environment, you can also use the position name: Dear position name.