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The best way to communicate by warm "Hello " with a pleasant smile, if you have a visiting card exchange it , then introduce your self and then introduce your company.
Then give a chance to introduce other person and get information on his/her company.
If you are not meeting face to face best way is through a email (Introduction of self and company)
or putting a request in Linkedin for adding and follow his/her interest analyse you have common interest in work , browse through groups which are common)
well presentation well inroduce you
try to make your1st impression is the best at all
