Technology development and supply contract with Pion Electric

210 cars for DAWONSYS SIV Seoul Metro Line 4

Woojin Industrial Co., Ltd. 54-car CMSB Byeolnae Line

Woojin Industrial Co., Ltd. 200-car CMSB Busan Line 1

Hyundai Rotem GTX-A 120-car CMSB

Hyundai Rotem GTX-A 40-car CMSB

Plans for delivering 125 cars to Hyundai Rotem for Singapore's master controller

Plans for delivering 20 cars to Hyundai Rotem for Tanzania's master controller

Hyundai Rotem 48-car master controller for Seoul Metro Line 9

VVVF Inverter Improved PEM Module

Supplied Train Control and Monitoring System: On-board computer MIU1 card

Supplied PCB: OSC Card for ATS 1496-20030 to Seoul Metro

Supplied braking controller for electric vehicles (Inverter control) to Seoul Metro

Supplied air compressor starting delay circuit for railway vehicles (Inverter control)

Supplied nearby ventilation devices for railway vehicles to Seoul Metro

Supplied inverter modules for railway vehicles to Seoul Metro

Supplied auxiliary power device for railway vehicles to Busan Metro

Supplied nearby ventilation devices for railway vehicles to Busan Metro

"Selection for high-efficiency/high-reliability CMSB development task to increase the safety of internal power of city railway vehicles
(Korea Agency for Infrastructure Technology Advancement)

"Selection for domestic development of unit 8200 electric railway vehicle auxiliary converter cooling fans - Joint investment by KORAIL
(TIPA)"

Acquired innovative product certification - nearby ventilation device (IGBT STACK) (2021.12.24)

Successfully registered Hyundai Electric and Energy System Co., Ltd. as a partner (2021.12.30)

Provided 32 Knorr automatic controller ECUs to Seoul Metro Line 1, 4

Contracted 32 improved CMSBs with Seoul Metro Line 1, 4, and Ilsan Line

Contracted DAWONSYS EMU-150 master controller, CMSB, and encoder panels

Completed improving 2 Mitsubishi C/I IGBT stacks for Line 4

Successfully registered Rotem as a partner

Selected as a participating R&D institution for roof-mounted air conditioner board and air conditioning/heating controller for high-speed rail by the KAIA

Completed emergency broadcast and lighting modulation and standardization process (KAIA)

Completed the domestic development of SIV controller for Busan Metro Line 2 (KAIA)

Carried out individual blockage of diesel railway vehicle towing motors and monitoring system development task

Carried out the domestic development of EODs

Carried out performance improvement task for LED room display

Carried out smart safety management system development control for high-pressure and -temperature plumbing facility

Completed dormitory construction

Opened BEXCO exhibition booth

Carrying out on-track test for domestically developed SIV controllers under the condition of purchase for Busan Metro Line 2

Completed Inverter IGBT Stack for Busan Metro Line 2, currently carrying out design test

Contracted 196 master controllers, CMSB, and encoder panels for Seoul Metro Line 2, 3

Completed delivery of Seoul Metro line 7, 16 cars for Seoknam Line, CMSB

Contracted 40 master controllers for KORAIL Daegok-Sosa section, CMSB, and encoder panels

Completed development of emergency broadcast and lighting modulation and standardization task, currently carrying out on-track tests

Delivered 26 improved CMSBs for Seoul Metro Line 1, 4, and Ilsan Line

Improved Knorr automatic controller as a domestic product for 25 cars for Seoul Metro Line 1, 4

Currently delivering air conditioning/heating switchboard for 232 cars for Carrier MRT2

Development of GTO-modular IGBT for electric vehicle power control and development of STACK for the main power conversion system

Development of technology for optimization and operation of railway vehicle propulsion system using hydrogen fuel cell hybrid power system

Technology development of power semiconductor cells operation driver for propulsion control device and DC/DC

Carried out domestic development project for SIV controller for Busan Metro Line 2 under the condition of purchase

Improvement project for 4 types of SIV GDU, etc. for KORAIL Line 1 (44 cars)

Succeeded in developing 3 types of MMIs, etc. for KORAIL unit 8200 electric railway vehicles under the condition of purchase

Busan Metro Line 2 Inverter IGBT Stack development (KAIA)

Seoul Metro Inverter EC-RACK and A154, 244 replacement project (226 cars for Line 7, 8)

Completed KORAIL air conditioning/heating controller for 280 cars in KORAIL Line 1

Performance improvement of C/I IGBT stacks for Hyundai railway vehicle for Seoul Metro Line 4

Development and delivery of braking control device ECU boxes for railway vehicles for Seoul Metro

Carried out the contract, development, and delivery of air conditioning/heating switchboard for 232 cars of Autech Carrier MRT2

Opened INNOTRANS exhibition booth in Germany

Carried out modulation and standardization of emergency broadcasting and lighting

Development and delivery of AAE unit and diode units for Thailand diesel railway vehicles

Airport railway polymer insulator improvement project

Success of braking electronic control unit (Knorr) (ECU) national task and commercialization

Production of auxiliary power device for unit 8200 electric railway vehicles

Development and delivery of IDUs for 250KVA SIV

Construction and relocation of the office

Line 4 Mitsubishi nearby ventilation device GTO placed in IGBT SYSTEM 1, completed on-track test
(Completed results for the on-track test: C/I placement 1 Free donation of IGBT stack - 454 placement)

Manufacture of auxiliary blocking diodes and diode protection stacks for delivery to KORAIL KTX Sancheon

Delivery of 12R air conditioning switchboard to Jakarta, Indonesia

Development of BAC-254 control board for Line 4 CMSB

Completed supply contract and delivery of weekly controller, CMSB, and pantograph for Seoul Metro Line 2 200R
(DAWONSYS)

Corporate Research Institute

Venture Corporation Certification

SME (INNO-BIZ) Certification

Carrying out a domestic development project for ECU for Line 4 railway vehicles

Carrying out the development of convergence ESS for nanocarbon application short cycle to save elevator energy

Development and delivery of Incheon Airport Railway MRV & APU for Cleaning Vehicle APU (60KVA)

Development and delivery of GO converter stack for Seoul Metro Line 4

Development and delivery of ADU for Daegu Metro Line 2

Signed agreement for the development project of MMI and 2 others for KORAIL under the condition of purchase

Succeeded in the domestic development of propulsion control device EC rack under the condition of purchase by KORAIL Line 7, 8

Completed the improvement task of power control device for KAIA and KORAIL

Carrying out contract and delivery of GTO drive GA-85 repair (280EA) to KORAIL

Carried out contracting of improved air conditioning/heating switchboard (Autech Carrier) for 360 cars for Busan Metro Line 1

Acquired risk analysis certificate from KOSHA

Development and delivery of central control device (broadcasting device) to KORAIL

Domestic development and delivery of OVCRf for Seoul Metro Line 1

Development and delivery of 27 pieces such as Nuriro inverter device, etc. through KORAIL

Delivery of 9 sets of Hyundai/Daewoo compatible CMSB BOX for Line 4

Development and delivery of GTO C/I controller unit PCB for Gwacheon and Bundang Line

Acquired clean business certification from the Korea Occupational Safety & Health Agency

Development and delivery of switchboard, route information display, LED display

Acquired ISO 9001 certification

Signed task agreement with KAIA and KORAIL for the improvement task of power control device

Development and delivery of CMSB BOX 15set for KORAIL

Repair of inverter stack and converters for new unit 8200 railway vehicles

Domestic development of 3 types of ATS onboard unit SVK3150/3450 and orbital unit V25913 power supply

Signed agreement for the domestic development of propulsion control device EC rack under the condition of purchase for Seoul Metro

Signed domestic development agreement of 2 types of M-CPU1 through signing of an MOU

Delivery of 5 types of high-pressure devices including 56-car CMSB for Line 7, master controller, 190KVA SIV BOX, etc.

Domestic delivery of C/I Power for Line 1, 4

Delivery of improved 190KVA SIV BOX, DCCT BOX, IES BOX, MF BOX for Line 5

Establishment of technology R&D lab

Delivery of 12KVA SIV for KRRI

Development and delivery of ADU device through signing of MOU with city railways for Line 6

Delivery of KORAIL brake control unit (EOD)

Changed name to Leekun Industrial Systems Co., Ltd. (changed to corporate body)

Development and delivery of CMSB for Line 4

Development and delivery of Rotem SIV Controller

Delivery of CONTROL UNT, SQC UNIT, CHS STACK for Line 7, 8 SIV

Development of inverter control units for Line 6 (Mitsubishi IGBT-type)

Domestic development of TGIS monitor for Line 4

Delivery of SIV Toshiba-type GTO UNIT for Line 2, 3 SIVs

Delivery of switchboard, display controller & propulsion gate power, and gate amplifier for Line 4

Official registration of Seoul Metro electronic cards, PCBs, and SIV parts

Development of gate power and gate amplifier for Mitsubishi propulsion device for Line 4

Establishment of Tratech (CEO Lee Yong-beom)

Domestic development of MA charging device for Line 2, 3