PLANAF 2nd "Specialized" Division, North Sea Fleet, PLA Navy is headquartered in Dialing with primary focus on ASW, ELINT and other EW related missions. It was commissioned in April 1952 in Ningbo’s Zhuang Airport from Army’s 138th Division, 44th Army, 4th Field Army with Lai Jinhua as its first commander. Its three regiments are: 4th, 5th and the 6th.PLANAF 4th Specialized Regiment, HQ