I've imported and exported 1000's of refrigerated containers over the past ten years with my other business.
You will need to contact a forwarding agent and get a inter-mogul rate. (includes pickup and delivery to and from the sender to your door)
http://www.nipponexpress.com/ is one of the largest, but there are many more.
When the container arrives you usually have a couple hours to unload it, otherwise you will incur extra costs.