What are the qualities expected of a salesman?

What are the qualities expected of a salesman? Essential qualities of an effective salesman are: (1) personality (2) cheerful disposition (3) mental ingredients (4) courtesy (5) patience and perseverance and (6) complete knowledge about the self, product, company and the customer!

Essential qualities of an effective salesman are: (1) personality (2) cheerful disposition (3) mental ingredients (4) courtesy (5) patience and perseverance and (6) complete knowledge about the self, product, company and the customer!
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