JHEt is the only privately operated explosion-proof testing laboratory in Taiwan accredited by the TAF (Taiwan Accreditation Foundation). We are certified under CNS 3376-0 (IEC 60079-0), CNS 3376-1 (IEC 60079-1), and CNS 3376-7 (IEC 60079-7), and equipped with state-of-the-art facilities and expertise in explosion-proof testing.

JHEt provides product acceptance testing and technical support for explosion-proof engineering projects. In accordance with Taiwan’s CNS regulations, we assist manufacturers in applying for TS certification, offering pre-evaluation and troubleshooting services to significantly shorten the certification process. Additionally, we deliver comprehensive inspection and certification consultancy services compliant with CNS, IECEx, and ATEX international explosion-proof standards — helping enterprises accelerate certification, enhance product competitiveness, and expand successfully into global markets.

Testing Services

Safety & Explosion-Proof Testing Services

Taiwan: CNS 3376-0, CNS 3376 Series, CNS Certification
International: IEC 60079-0, IEC 60079 Series, IECEx Certification
Europe: EN 60079-0, EN 60079 Series, ATEX Certification
United States: UL 1203, UL 913, UL 60079-0, UL 60079 Series, UL 2279 Series, FM 3600, FM 3615, FM 3610, ANSI/NEMA 250, ANSI/NFPA 70 (NEC)

Test items include:

Heat resistance test
Cold resistance test
Temperature rise test
Enclosure pressure / explosion resistance test
Ignition test (source of ignition isolation)
Enclosure airtightness test (IP protection rating)
Insulation resistance and dielectric strength test
Temperature classification (T1–T6) evaluation
Marking and warning label compliance check
Hazardous area suitability verification (Class / Division / Zone system)

Certification Services

Taiwan Explosion-Proof Product Certification (TS Ex Mark)
International IECEx Certification Testing Services
EU ATEX Directive Certification Consultancy
U.S. UL and FM Explosion-Proof Certification
Explosion-Proof Compliance Marking (Ex Marking) Design & Conformity Consultation
TAF / ILAC-MRA International Mutual Recognition Report Support