Warmly welcome colleagues from Fengjiancheng Central Hospital to visit our center. Thank you! !

I don't know whether you are making a welcome speech or a slogan. I hope my answer can help you > @ ~

If you give a welcome speech, you can say: (とみぐすくちゅぅびょぅしそし).

Hello, colleagues from Fengjie Central Hospital, and warmly welcome you to visit our center.

If it's advertising, try to be concise. It can be written as follows: "よぅこそぃらっしゃぃま". See colleagues in Zhong Cheng Central Hospital.