Is an X-ray device still a medical device if it does not contain an imaging medium in its composition?

No! This is the bid I recruited: If the bidder is an agent, it should have a "medical equipment business license", the manufacturer of the products listed above for the project's only "sales authorization", domestic products shall be issued by the manufacturer of the authorization, foreign products shall be issued by the manufacturer of the domestic office or the national general agent of the authorization issued by the manufacturer of the product manufacturer should have "medical device manufacturer's license", "medical device registration certificate" and medical equipment manufacturers should have "medical device manufacturer's license", "medical device registration certificate" and medical equipment manufacturers. The manufacturer of the agent's products should have a "medical device manufacturer's license", "medical device registration certificate" and medical device registration form, and the registration certificate should be consistent with the bidding product model.