As many as 23,600 pcs. of 18D container were manufactured from 1988 to 1991 by JR Freight to replace JR type containers. The exterior is painted blue on which base cream patterns are separately painted. Because of the large production quantity, it made the majority of containers at a stretch so as to build an epoch in 1990s. Nonetheless, it was replaced with 19D or 20D containers due to aging in the later years and finally decommissioned in 2013.
-Prototype made by CIMC (China International Marine Containers) manufactured after 2014. Commercialized the late model whose logo became the JR mark.
-Reproduce the form of 14 ribs on the side plate without doors and 9 ribs on the end plate without doors.
-Reproduce the door stopper position and the presence or absence of side handles that differ depending on the lot by printing.