What is the difference between new and used containers?

A “new” or “single-trip” container is basically a container that has been manufactured in China. To keep the cost down, we offer the containers to shipping lines to be used once to carry cargo from the Far East back to the UK. Once the cargo has been emptied, the unit is then returned empty back to our depot. A “used” or “second hand” container is an ex-service shipping line unit that has been retired from their fleet which is now dedicated primarily to storage usage. The “used” containers we have are all A1 grade (wind and watertight).