The Chang Jin company was established in 2002 so it is unlikely that there will be real old helmets from this manufacturer to be found but since they also seem to repair old helmets it could be that these are leaving their workshop with a new badge. They are currently in business and helmets can be ordered from them: http://www.divinghelmet.co.kr/
Chang Jin Diving Apparatus Co.
‘DiveScrap’Index
the scrapbook of diving history
Do you have images you want to share then please send them to: david@divinghelmet.nl Thank you.