When we are using an informal way to greeting we tend to say
"Hi", "Hello","how are you"; "what's up" "how are you today" "it's been a long time" etc.
And now that we learn how to greet properly, we need to learn about introduce
If you find yourself in conversation with two people who don't know each other, try to introduce them as soon as possible.
First, state the name of the person being introduced to. This is the ‘higher-ranking’ person.
Second, say “I would like to introduce” or, “please meet” or, “this is,” etc.
Third, state the name of the person being introduced. This is the ‘lower-ranking’ person.
Finally, offer some details of each other, as appropriate. As I wrote in a previous blog article, add a snippet of information about a topic of common interest between the two parties. Do not elaborate. This will help them connect and pursue a conversation.
Describe tu producto y sus características aquí, para dar una idea general del mismo a la gente.