International commercial shipping to the United States

I am looking for some information about international commercial shipping to the United States, South Carolina, to be exact. You see I represent Pans and Sheets and Cups, Oh My!, a high end kitchen goods company based in Zurich, Switzerland. We have opened a line of trade with a reseller in Charleston, South Carolina and therefore need to know the best options for shipping international. The contents of the orders will vary but they will most likely include some of our best sellers (cookies sheets, silicon pie pans, non stick measuring cups, etc.). If you would like to know all we sell to get a better picture, feel free to check out our web site which should give you a good sense of what we sell. We will also occasionally need some shipments to go the opposite way, from South Carolina back to Switzerland because of returns or such. please supply me with a quote for shipping in both directions as that will be a factor in our decision making process. Thank you for looking at my post. Hope to work with you!