• 

•  

• 

• 
• 05
• Founded Tong-Il Boiler Manufacturing Co.(private company)

•  

• 

• 
• 05
• Established Tong-Il Boiler & Industries Co., Ltd

•  

• 

• 
• 09
• Obtained production license from Korean government for marine equipment,
  pressure vessels, industrial boiler

•  

• 

• 
• 02
• Obtained production license from Korean government
  for high pressure vessels & special tanks(e.g., gas tank)

•  

• 

• 
• 04
• Shop approved by DNV, LR, GL, KR, ABS, BV

•  

• 

• 
• 06
• Obtained ASME certificates(S, U, U2)

•  

• 

• 
• 11
• Renewed ASME certificates

•  

• 

• 
• 10
• Obtained ISO-9001 certificates for boiler and pressure vessel(DNV)

•  

• 

• 
• 07
• Obtained DNV class I.

•  

• 

• 
• 08
• Established an affiliated company, Y & S Co., Ltd.

•  

• 

• 
• 01
• Extended a first factory

•