I want to open a hospital. Does anyone of you know who is a top supplier in Medical Equipment?

Your question displays a lot of niavte. Opening an hospital will require that you use dozens of suppliers. There is not a one stop shop in the medical industry. In most instances, you will want redundancy in your supply chain, in order to prevent the ineveitable backorders.
I hope you have a lot of money, too. Even a modest thirty bed facility will cost you about $3,000,000 in construction costs before you open the doors, and then, you will have to equip it… and remember the license fees, inspections, and permits. Good luck!

There are suppliers and manufacturers from all across the world dealing with medical equipments. However, you need to find a supplier from your country or you can import it from other country if it’s cheaper and of good quality. I suggest you http://www.themedica.com where you can find the suppliers of hospital equipments with complete contact details you can also send direct inquiry to the suppliers and manufacturers from this website.