According to China’s tax laws, renters can issue invoices with company headers. It is illegal for Ziroom to refuse to issue invoices with company headers. In order to safeguard your legitimate rights and interests, you can take the following measures:

Contact Ziroom customer service directly, explain to them that you need to issue an invoice on the company's header, and ask Ziroom to issue one for you. If Ziroom refuses to issue an issuance, you can ask it to provide relevant legal basis.

If Ziroom still refuses to issue an invoice on the company's letterhead, you can complain to the local tax bureau. You can first consult the local tax bureau for relevant regulations to learn how to apply to change the invoice title.

If you have issued an invoice with a personal header, you can contact Ziroom customer service or the local tax bureau to apply to change the personal header to a company header.

In summary, you should insist on an invoice on your company's letterhead, as this is your legal right. If Ziroom fails to perform its obligations, you can take legal measures to safeguard your rights and interests.