Depends on your position,how long you have,position of the guest and objective of the visit.
1) Your position - you should only say relevant to your position and responsibilities.you should not say more for other people.
2) Depends on your time and structure your talk accordingly
3) Position of the guest and objectives of the visit are important.Because you need to tell them what is relevant to attract them.
Usually,you need to do the followings:
1) Introduce yourself,(name and position - what you do)
2) Welcome the guest(s)
3) Introduce other important people around (especially your boss and senior staff)
4) Give a quick run down on the company history and main business.
5) Mention any awards and key achievement.
6) Target the key interest of the guests and organise your materials to suit them
7) Give them time to ask questions
8) Thanking them for their attention and if they ahve any more question,who should they contact?
Hope this helps
