Customer service +82-54-927-1775 · Weekdays 10:00–17:00 (KST) woongtech@woongtech.co.kr
CERTIFICATION & PATENTS

Certifications & Patents

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CERTIFICATION & PATENTS

Certifications & patents

Click a certificate to enlarge it.

PatentsIn-house filter technology
Filter structurePatent No. 10-2783728
Filter manufacturing method · functional filterPatent No. 10-2349357
International certificationsQuality & environmental management systems
ISO 9001:2015Quality management system
ISO 14001:2015Environmental management system
Certificates & confirmationsPublic procurement & company status
Direct Production Confirmation
SME ConfirmationSmall enterprise
Startup Confirmation
Factory Registration Certificate
Disabled-owned Enterprise Confirmation
TrademarksWOONGTECH · Cheongjeong Dangdang · Insaeng Filter
WOONGTECHTrademark No. 40-1632240
WOONGTECHRegistered trademark
Cheongjeong DangdangRegistered trademark
Cheongjeong DangdangRegistered trademark
Insaeng FilterRegistered trademark
TEST LABS

Accredited testing institutes

Filter performance is verified by accredited labs KCL, FITI, KITECH and KOTITI.

KCL — Korea Conformity Laboratories
FITI Testing & Research Institute
KITECH — Korea Institute of Industrial Technology
KOTITI Testing & Research Institute
Test reportsClick to enlarge
Medium filter — minimum efficiency reporting value (MERV)FITI · 2025.07
Medium filter test reportFITI · 2025.09
Industrial pre-filter test reportKOTITI · 2026.01
Gas turbine filter test reportKTDI · 2026.06
Pre-filter test reportKOTITI · 2026.07
HEPA filter test reportKOTITI · 2026.06
Air Intake Pre FilterKITECH
KC certification test reportKATRI · 2025.02
Impregnated activated carbon test reportFITI · 2025.03
HEPA nonwoven media test reportFITI · 2025.03
Activated carbon test reportKOTITI · 2025.03
Cabin air filter test reportKITECH

Tell us the size and quantity

Send us the width × height × depth, efficiency grade and quantity, and our team will send you a quotation.

Request a quote online +82-54-927-1775