There are 4 Sino Swearingen Acft SJ30-2 aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 2003 and 2007.
N7SJ
2007 Sino Swearingen Acft Corp SJ30-2
Cedar City, UT
N30SJ
2006 Sino Swearingen Acft Corp SJ30-2
Wilmington, DE
N50SJ
2005 Sino Swearingen Acft Corp SJ30-2
Cedar City, UT
N404SJ
2003 Sino Swearingen Acft Corp SJ30-2
Cedar City, UT