I would like to book a domain for my SEO company which one will be good for Global promotion .com or .info or .org

I think and believe .com is best....

All of these are nice. But ".com" looks nice and universal. But you can use any of these.

according to me .com is the best

.Com is the good for Global Promotion.

.Com is the most popular extension which can be purchased by any company or person from any country. It is Unrestricted domain name it means .Com address are open to anyone.

The main thing is that .COM is the perfect extension for Search engine Submittal.

For Further detail you can check the following link.

http://www.glenwoodfin.com/seo/is-com-the-best-domain-name-extension-for-google-search-engine-ranking/

HI
.com is good if you targeting the global market.

I prefer .com for SEO because it is global and .info sites are not given much importance by Google.

It's actually an excellent and useful item of information.