I just want to introduce my company in an email in small brief, and pass to a request for appointment!
What should we write about the company and how to start the email

99% will go to spam or not be opened.
I would write one line:
We have the BEST prices and the BEST services!
Please respond by email if you would like an appointment, or a list of services and prices sent to you in PDF format.

You can introduce by sharing your on Facebook,Twitter,Google,Youtube, and many other websites email lots of people and tell people pass it on.