These containers have been mentioned before on this forum . I am sure the 40’ containers are the same as JTC (JTC was annoyed by this ) and the 53’ containers are the same as Atlas . Not sure about the 20’ containers. These are very nice models at a great price the only issue I had is some of the magnets were not in the same orientation and the containers would repel each other rather than attract What’s funny is that if these containers are being made during off hours or unscrupulously they still honoured the wishes of maersk sealand , and stopped producing or selling their containers with the maersk trade mark