A friend of mine's wife is in this profession. She works for a company in Shenzhen. It's actually equivalent to sales. Or salesman. To keep running business to contact various hospitals to buy the medical equipment you want to sell to others. Income is not low, but the fluctuation is relatively large. Generally can be 4 to 8 thousand a month, a month of tens of thousands or a few months to get a salary of the situation. Of course, the income and performance is linked.
How to say it, there is cruel competition in any industry. The prospect of this career is still possible. As long as the hard-working people can find their own success, want to mix the life of course, no food, huh?
Wish the owner success!