1980
Established Buyoung Enterprise Co. in Busan, Korea
1982
Developped Hydeck (Manual Hydraulic Remote Valve Control System)
1991
Moved Company to Kimhae Industrial Area near Busan
1992
Developped Wax Type Regulating Valve (US patent No. 5135163)
1995
Developped Main Engine Top Bracer
Made sales and technical collaboration with Norriseal Control in USA
1996
Developped Control Valves (2-Way & 3-Way types with pneu. diaphragm actuator)
1997
Develooped Telescopic Spreader
1998
Developped Electro-Pneumatic Controller (EPCON)
Developped Watertight Sliding Door
1999
Developped Pneumatic Actuator (piston type)
2000
Changed company name from Buyong to BY Controls, Inc.
Acquired ISO9001 Certtification through DNV
Developped Pilot Door
2001
Developped Valve Remote Control System (VRCS)
2002
Granted the Patent of Electro-Pneumatic Controller (EPCON)
2003
Acquired ISO9001 Certtification through KR
Developped Cryogenic Valve and High Temp & Press Steam Control Valves
2005
Developed Pneumatic On/Off & Control Valves for (BP FPSO)
2006
Acquire INNO-BIZ A grade from Small & Medium Business Administration
2008
Awarded Bronze Tower Order of Industrial Service Merit (No. 2039)
2010
Acquired CE Certificate for Watertight Sliding Door and Valve Remote Control System awarded by BUREAU VERITAS
Acquired Certificate of Reliability (No. KQ-2010-01) from The Korea Shipbuilders’ Association (KOSHIP) and Korea Marine Equipment Association (KOMEA)
2012
Acquired ISO 9001:2008 and ISO 14001:2004 Certificate awarded by ABS Quality Evaluations, Ltd.
Acquired MED Certificate for A60 Watertight Sliding Doors certified by DNV.
Acquired DNV Type Approval Certificate for H60 Watertight Sliding Doors.
2013
Awarded Excellent Cooperation Company from Hyundai Heavy Industries.
2015
Acquired OHSAS 18001 : 2007 Certificate Awarded by ABS.
Acquired patent for Watertight Sliding Door
2016
Acquired patent for Pilot Door
2017
Developed Air Driven Gas Booster.