Historical details for ABN 16 744 291 536Version: 9.9.7

ABN details help
Entity name From To
LIU, YU-HANN 20 Jan 2016 (current)
LIU, YUHANN 12 Oct 2007 20 Jan 2016
LIU, YUHANN 01 Aug 2007 12 Oct 2007
LIU, YUHANN 26 Apr 2001 01 Aug 2007
LIU, YUHANN 26 Apr 2001 26 Apr 2001
ABN Status From To
Cancelled 02 Mar 2020 (current)
Active 03 Nov 2016 02 Mar 2020
Cancelled 23 Nov 2006 03 Nov 2016
Active 01 Nov 2002 23 Nov 2006
Cancelled 01 Jun 2002 01 Nov 2002
Active 26 Apr 2001 01 Jun 2002
Entity type
Individual/Sole Trader
Goods & Services Tax (GST) From To
Cancelled 23 Nov 2006 (current)
Registered 01 Nov 2002 22 Nov 2006
Cancelled 01 Jun 2002 31 Oct 2002
Registered 01 May 2001 31 May 2002
Main business location From To
QLD 4122 03 Nov 2016 (current)
QLD 4122 05 Sep 2014 03 Nov 2016
QLD 4122 26 Apr 2001 05 Sep 2014
Trading name(s) help
The ABR stopped collecting and updating trading names in May 2012. Businesses now register their business name on the national Business Names Register. To learn more visit the ASIC Website External site.
Trading name From To
PROFICIENT TECHNOLOGY SERVICES 22 Nov 2002 (current)
Proficient Technology Services 01 Nov 2002 22 Nov 2002
YUHANN LIU 07 Mar 2002 27 Jun 2002
PROTECH COMPUTER SYSTEMS 26 Apr 2001 07 Mar 2002
  • ABN last updated: 02 Mar 2020
  • Record extracted: 28 Oct 2026

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