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Company introductionIntroduction of productsManuals for each modelInformation on business branchesTechnical support: ManualCustomer support
Corporate philosophy
History & Achievements
Apr Headquarters relocation to new building
Mar Pure sine wave KC(EMC) Certification - DK2410K / DK4810K / DK4815 / DK4820 / DK4880
Jan Pure sine wave KC(EMC) Certification - DK1260 / DK1280 / DK2440 / DK2460 / DK2480
FCC A CLASS (SMD Certification)- DK2450U, DK4850U
Dec Pure sine wave KC(EMC) Certification
DK1206 / DK1208 / DK2406 / DK2408 / DK4806 /DK4808 / DK4810
Modified sine wave inverter KC(EMC) Certification DP-95024AQ
Nov Hybrid inverter
DKH2430SR / DKH4830SR (2U RACK type, RS232C), DKH2430SC, DKH4830SC
Pure sine wave KC(EMC) SMD Certification
DK1210 / DK1215 / DK1220 / DK1230 / DK1250 / DK1260
DK2410 / DK2415 / DK2420 / DK2430 / DK2450 / DK2460
Oct Modified sine wave inverter KC(EMC)Certification - DP-3000BQ
Certification of FCC Class A - DK2410U / DK4820U / DK4810U[CKD]
Awarded the promising SME in Incheon city.
Modified sine wave inverter KC(EMC) Certification - DP-3000BQ
FCC Certification DK2410U / DK4820U / DK4810[CKD]
FCC A CLASS (SMD Certification) - DK1220U / DK1230U / DK1250U / DK2410U / DK2430U
DK4810U(CKD) / DK4820U
Sep Modified sine wave inverter KC(EMC)Certification - SI-32024BQ / SI-5400AQ
Commencement of 2nd factory construction.
Modified sine wave inverter KC(EMC) certification - SI-32024BQ / SI-5400AQ
KC certification for safety for charger - PDC-1260 / PDC-2440
Aug Modified sine wave inverter KC(EMC)Certification
SI-2700AQ / DP-44012AQ /DP-6000AQ / DP-50024BQ / DP-6000BQ / SI-64024BQ
Design registration
Solar Standalone Inverter (No.30-0919965)
Jul Modified sine wave inverter KC(EMC)Certification
DP-1700AQ / DP-3000AQ / SI-22012AQ / SI-2200BQ / DP-40024BQ
Jun Two registrations of program copyright
ATS-1.7K (ATS phase transformation system )
Automatic Transfer switch 2way
May ROHS certification of all pure sine wave DK / KEY series
Mar 2U Rack FCC B Class Certification
PRM2000W48120S_DK4820TRU / PRM3000W24120S_DK2430TRU / PRM3000W48120S_DK4830TRU
Nov Four registrations of program copyright
CON MD1610 (Converter)
BVVWD 1610K2 (Battery voice warning device)
DSP-K MDD1610S-1 (Sine wave)
PDS-K PO1610M-1 (Modified sine wave)
Solar Standalone Inverter (1KW, 2KW, 3KW) Developed MPPT-Charger System
Oct Patent certification (Asymmetric LLC resonant converter device No.10-2013-0062846 )
KC(EMC)Certification DK2410K / DK4810K / DK4815 / DK4860 / DK4880
Sep KC(EMC)Certification DK1240 / DK1260 / DK1280 / DK2480 / DK4815 / DK4840
Aug KC(EMC)Certification DK2440 / DK4820 / DK4830
Jul QR(Quality Recommend) certification by Incheon city (product with outstanding quality)
May Selected as SME with a constant technological innovation( INNO - BIZ ).
Jan Consigned certification (certificate for the safety of electric products PDC-4840)
Design registration
Fuse holder(No.30-2015-0030358)
Dec KC(EMC)Certification DK2410 / DK4810
FCC Certification
PWRIG100012120S-DK1210U / PWRIG200048120S-DK4820U /
PWRIG300048120S-DK4830U / PRM1000W24120S-DK2410TRU / PRM1000W48120S-DK4810TRU
Registered as patent 10-2015-0180925 (Fuse holder for printed circuit board)
Oct Three copyright of program
DKTR-A(DKTR-A-RS232 communication)
Automatic Transfer Switch 2-way-1
Automatic Transfer Switch 3-way-1
Sep DK180S(inverter), DKC20A(inverter) Assessment for reliability by KTC (certification for performance)
Aug KC(EMC)Certification DK1250 / DK2430 / DK2450
Jun KC(EMC)Certification DK4850
May Selected as a member of a project for improving export capacity of rapid growth
Selected to take part in labor-study concurrent system (for junior college degree programs)
Feb Winner of Grand Award for SME Quality Grand Prix
Jan DC380V input 10KW 200V ~ 240V, 100V ~ 120V completion of development
PWRIG10K380120 / PWRIG10K380230 / DK38010KWTRU
Selected as company for military service exemption
Dec FCC B Class Certification
Consigned certification (certificate for the safety of electric products PDC-12100, PDC-2460)
Sep KC(EMC)Certification DK2460
Jun Design registration
Bolt to access electric terminal of inverter (No.30-0746873)
May Design registration
Radiator panel case for inverter (No.30-0743463)
Apr FCC Certification
PWRIG500012 - DK1250U / PWRIG500024 - DK2450U / PWRIG500048 - DK4850U / PWRIG800024 - DK2480U / PWRIG800048 - DK4880U
KC(EMC)Certification DK1210 / DK1215 / DK1230
Mar Patent registration No.10-1374710 (assembler for inverter connection terminal)
Utility mode registrationsl No.20-0471820 (bolt to assemble power connection terminal of inverter)
Jan FCC Certification
PWRIG100024 - DK2410U / PWRIG200024 - DK2420U, DK2415U / PWRIG100048 - DK2410U
KC(EMC)Certification - MSIP-REM-pnk-DK2415 / MSIP-REM-pnk-DK2420
Design registration for power connection terminal of inverter
Dec FCC Certification
PWRIG150012120S / PWRIG150024120S / PWRIG150048120S / PWRIG200012120S
Certificate of CLEAN workplace
Selected as SME with export potential
Oct FCC certification for pure sine wave (1kw-class) G-44-2013-03028
PWRIG100024 / DK2410U
Pure sine wave 2KW/1.5KW-class FCC Certification G-44-2013-03029
PWRIG200024 / DK2420U, DK2415U
Sep FCC certification of pure sine wave (1kw-class) G-44-2013-02769
PWRIG100048 / DK2410U half-finished goods(CKD)
Jun Selected as vendor for U.S. government (SAM)
Selected as promising SME
Apr Registered of program copyright
DC power voltage display device - 2 No.C-2013-008381
Mar Patent application of assembly of connection terminal for inverter [No.10-2013-0028418]
Utility model application of bolt for improving assembly between power connection terminal [No.20-2013-0002328]
Design application of bolt for accessing electric terminal of inverter [No.30-2013-0013879]
Design application of power connection terminal of inverter [No.30-2013-0010619]
Aug Three registrations of program copyright
DSP-K MOM1109S (Sine wave) C-2012-015236
DSP-K MDM1110S (Sine wave) C-2012-015237
PDS-K PO1112M (modified sine wave) C-2012-015238
Nov Applied patent (10-2011-0133525)
Nov Consigned certification (certificate for the safety of electric products PDC-2420)
Sep Registered of program copyright
Display device for DC power & voltage(VC METER) S-2011-005517
May Registeration as venture company
Apr Consigned certification (certificate for the safety of electric products PDC-1230)

Patent registration(drive circuit of inverter)
Patents No.10-0958187

May Certification of test report(by Korea Testing Laboratory)
Mar Registrations for program copyright (2010-01-211001589)
PDC-mod3500 Based on source technologies Modified sine wave
Dec Test report certified (Korea Testing Laboratory)
Sep ISO 14001:2004 / 9001:2008 Certification
Jun Manufactured new pure sine wave (by DSP)
Apr Completed development of patented/ new pure sine wave by original technology
Jan Two registrations of program copyright
sine/key-10b dsp) : 2009-01-211-000248
main/key-d10a (dsp) : 2009-01-211-000249
Dec Completed development of universal pure sine wave inverter for precision medical devices and IT(related to pure sine wave)
Registered as patent (10-0873716-0000)
Mar Patent application of drive circuit for inverter (application number 10-2008-0026412)
Certification of R&D department (technology lab)
Copyright registeration of complex program (2008-01-211-002878)
Dec Registered of program copyright (2007-01-211-007239)
(Control device of input power and overheating)
Registration as special company in parts and materials industry
Nov Certification of CE (SI-2200B/SE-11B20 EMC/EMI)
Jul Pure sine wave / Development start for complex products related to modified sine wave
Jan Sine wave / Modified sine wave inverter Dual Power(D.S.P)
Patent certificate (application no No.0012902)
Oct Registered of program copyright (2006-01-211-005232)
Registered of program copyright (2006-01-211-005233)
(Device improvement of pure sine wave inverter)
Aug Registered of program copyright (2005-01-211-004491)
(Contol of image noise and protective device for output device)
Jan Registered of program copyright (2005-01-211-000420)
(Quality improvement and productivity of modified sine wave)
Nov Designated as outstanding quality (G Mark of all our products)
Registered of program copyright (2004-01-211-000420)
(Up-grade all models of modified sine wave)
Aug DARDA Trademark registration No. 2003-0015997
Dec Registered of program copyright (2003-01-21-6511)
(Pulse control of pure sine wave)
Oct pure sine wave (DPK series) completed development
Sep ISO9001, KSA2001 certification (DAS/IAF)
Aug CE certification (1 model EMC/EMI)
Jun Selection of local sales outlets (36 branches)
Apr Member registration of Korea International Trade Association
Apr Development start of pure sine wave
Dec Registered for program copyright (2001-01-21-9765)
(Converting device of modified sine wave inverter)
Nov Partner company registration of SK Telecom
Aug Selection start of local sales outlets
Sep Establishment of PNKHITECH Co., Ltd.
About Us

Corporate Philosophy
History & Achievements

Pure sine wave
Modified sine wave
Solar light inverter
Battery charger
User Manual
Pure sine wave
Modified sine wave
Solar inverter
Battery charger
Branches guide

Local Store
Locations &
Contact Info

Technical support

KC Certificates
FCC Certificates
Model test report

Customer support

Estimate Inquiry

Certificate of patent registration
patent certificate of inverter circuit [No. 10-873716]
patent certificate of inverter circuit [No.10-0958187]
Patent certificate of connection terminal for inverter [No.10-1374710]
Utility model, Certificate of design registration
design certificate of power connection terminal for inverter[No.30-0728505]
Utility model right of bolt for improving assembly of inverter's power connection terminal with wire connector [No. 20-0471820]
PNKHITECH   |   E-mail.pnk@pnkhitech.co.kr
31, Neungheodae-ro 595beon-gil, Namdong-gu, Incheon, Republic of Korea. or 705-2 Gojan-dong, Namdong-gu, Incheon, Republic of Korea
TEL.82-32-830-7666  |   FAX.82-32-822-2339