Hi, I have some quick questions. 1) If I would like to diversify the items, what can I do to my customer if he needs to order different items from 5 suppliers? 2) If he does not satisfy the items from 5 suppliers, how to tell him to return the items to 5 suppliers (he believes the items are come from one place. That is my shop.) ? 3) If I decide the item's profit margin is a little bit high like $30 to $50. How to avoid suppliers contacting customer directly? Thank you.