Author name: Bruce Zhang

Bruce Zhang is the Founder and Senior Engineer of KingPo Technology Development Limited, with over 16 years of experience in environmental and safety testing technologies. As a member of SAC TC118, TC338, and TC526, he participates in national standard reviews and provides technical guidance on IEC and ISO compliance for global laboratories.

Automotive headlight being tested inside the rain spray test chamber with high-pressure water spray from S1/S2 nozzles hitting the part, realistic water droplets flying, dramatic lab lighting, professional testing scene photography.

How to Perform Rain Spray Test Chamber Testing for JIS D0203 Automotive Waterproof Compliance?

Bruce Zhang / 31/03/2026

Abstract / Technical Summary A professional rain spray test chamber is the essential equipment for conducting JIS D0203 automotive waterproof […]

A Complete Guide to IP Ratings and IEC 60529 for Equipment Protection

A Complete Guide to IP Ratings and IEC 60529 for Equipment Protection

Bruce Zhang / 31/03/2026

IP ratings and IEC 60529 standard define equipment protection against dust and water, ensuring safety, compliance, and suitability for diverse environments.

TC526,tc338

Kingpo Technology Development Limited CEO Zhang Chao (Bruce Zhang) Elected to Two National Standardization Technical Committees

Bruce Zhang / 30/03/2026

Dongguan, China — March 2026 — Zhang Chao (Bruce Zhang), founder and CEO of Dongguan Jingbang Machinery Technology Co., Ltd.

Walk-In Dust Test Chamber

IEC standard for dust test IEC 60529 IP5X IP6X

Bruce Zhang / 30/03/2026

I use the IEC standard to verify how well products resist dust intrusion. The IEC 60529 dust test assigns ratings

ISO9906 Water Pump Performance Testing System Sensors – KingPo Flow and Pressure Sensors with Ф25/40/50 mm Pipe Diameters for Accurate H-Q, P-Q, η-Q Curve Generation

How to Troubleshoot Common Faults in Water Pump Testing Equipment: Practical Operation Guide for ISO 9906 Compliance

Bruce Zhang / 27/03/2026

How to Troubleshoot Common Faults in Water Pump Testing Equipment: Practical Operation Guide for ISO 9906 Compliance Introduction Operators

What makes TNV-1, TNV-2, and TNV-3 circuits different

What makes TNV-1, TNV-2, and TNV-3 circuits different

Bruce Zhang / 27/03/2026

TNV circuits differ by voltage limits, insulation, and safety needs. Compare TNV-1, TNV-2, and TNV-3 circuits and learn safe testing principles.

KingPo Eurofins IEC 60335 test equipment delivery - Eurofins Finland laboratory team photo in front of Eurofins building

KingPo Eurofins IEC 60335 Test Equipment Delivered to Finland

Bruce Zhang / 25/03/2026

KingPo Eurofins IEC 60335 Test Equipment Delivered to Finland Espoo, Finland — Jun 2023 —A complete set of high-precision IEC 60335

KingPo HCT IEC 60335 test equipment on-site installation and training at HCT Korea laboratory

KingPo HCT IEC 60335 Test Equipment | Delivered To Korea

Bruce Zhang / 24/03/2026

KingPo HCT IEC 60335 Test Equipment Delivered to Korea Seoul, Korea — Jun 2021 — High-precision KingPo HCT IEC 60335 test

KingPo Intertek IEC 60335 test equipment delivery project - professional reception area of Intertek Hong Kong laboratory with modern white counter and yellow branding wall

KingPo Delivers IEC 60335 Test Equipment to Intertek Hong Kong and Korea

Bruce Zhang / 24/03/2026

KingPo Delivers IEC 60335 Test Equipment to Intertek Hong Kong and Korea Hong Kong & Seoul, March 2023 — KingPo

KingPo UL Vietnam IEC 60335 test equipment delivery - UL Solutions laboratory reception area in Hai Duong

KingPo UL Vietnam IEC 60335 Test Equipment | IEC 62368-1 Compliance

Bruce Zhang / 24/03/2026

KingPo UL Vietnam IEC 60335 Test Equipment Delivered for IEC 62368-1 Compliance Hai Duong Province, Vietnam — KingPo is