2004     Establishment of YUKANG TECH.

              Manufacture and Supply of Sea Water Lubricated Stern Tube Seal Device.

2007     Acquisition of Type Approval Certificate of Korean Register (Type : Sea Water         

              Lubricated Stern Tube Seal Device)

              Successful localization the Seal box Complete, Production and Supply

2008     Manufacture and Supply of Oil Lubricated Stern Tube Seal Device

              Acquisition of Type Approval Certificate of Korean Register (Type : Oil Lubricated 

              Stern Tube Seal Device)

2014     Development completion of high-speed composite sea water lubricated stern 

              tube seal devices, Manufacture and Supply

2015     Manufacture and Supply of BIO Oil Lubricatied Stern Seal Device

2016     Acquisition of Type Approval Certificate of Korean Register (Type :  BIO Oil 

              Lubricatied Stern Seal Device)

2017     Company name changed from "YUKANG TECH" to "YUKANG T.S."

2021    Acquisition of Type Approval Certificate of Korean Register (Type: High-Speed 

              Composite Sea Water Lubricated Stern Tube Seal Device)  

2022     Acquisition of Certification as a Specialized Company in materials, components, 

              and equipment 

              Acquisition of Type Approval Certificate of Ministry of Oceans and Fisheries 

              (Type : High-Speed Composite Sea Water Lubricated Stern Tube Seal Device) 

              Certification as an Innovative Growth Venture Company and Establishment of an 

              Affiliated Research Institute. 

              Acquisition of Type Approval Certificate of Russian Maritime Register of Shipping 

              (Type : Sea Water and Oil Lubricated Stern Tube Seal Device)