No 28 Shipyard Najin

No 28 Shipyard Najin is a shipbuilding company located north east of the Port of Najin in Rason, North Korea.[https://www.cia.gov/readingroom/docs/CIA-RDP90T00784R000200510001-7.pdf Report. Ship building] CIA It is believed to be one of a few shipyards in the port area.{{cite web |url=http://www.military-today.com/navy/najin_class.htm |title=Najin Class Frigate |publisher=Military-Today.com |date= |accessdate=2022-08-20 |archive-date=2019-05-20 |archive-url=https://web.archive.org/web/20190520195915/http://www.military-today.com/navy/najin_class.htm |url-status=usurped }}

The first reports of the shipyard came from then classified information in the 1980s from the CIA indicated a shipyard building a then 32m midget submarine.{{cite web|url=http://www.hisutton.com/North_Korean_Submarines.html|title = H I Sutton - Covert Shores}} and Taechong-class patrol boat/submarine chaser.

The company is believed to have built the Najin-class frigate, Soho-class frigate and one of the Nampo-class corvette used by the Korean People's Navy.