Shenzhen Sunlonge Technology Co., Ltd.

Sunlonge International Co., Limited is a world-leading manufacturer specializing in fluorescent leak detection products, UV inspection equipment, and custom optical solutions. Established in 1999 and headquartered in Hong Kong, we operate manufacturing facilities in mainland China with a dedicated in-house R&D team.

We serve a global market, providing professional-grade equipment and consumables for air conditioning, refrigeration, hydraulic systems, semiconductor manufacturing, NDT (non-destructive testing), and biological fluorescence excitation.

Advanced Optical Technology & Customization

With over 15 years of expertise in inspection lighting and UV detection dyes, our proprietary optical technology enables us to customize wavelength, intensity, and uniformity to meet specific application requirements.

Trusted by Global Leaders

Our semiconductor surface inspection lamps are trusted by many of the world's leading manufacturers, including TSMC, Samsung, Intel, and Micron.

Additionally, our NDT lamps, industrial UV lamps, and UV leak detection dyes are widely approved by major automotive and heavy equipment manufacturers, including Volkswagen, Honda, Toyota, Audi, GE, Ford, and Cummins.

Our Product Portfolio:

Leak Detection: UV leak detection dyes, fluorescent leak detection lamps, HVAC refrigerant leak detectors, automotive leak detection kits.

Inspection Lighting: UV LED NDT lamps, UV inspection lamps, semiconductor surface inspection lamps, wafer inspection lights.

Specialty Lighting: Fluorescent protein excitation lamps, forensic and security inspection lamps.

Our Commitment

We believe in building long-term partnerships. Beyond reliable products, we support clients with sourcing, communication, packaging, and OEM/ODM branding to ensure smooth and efficient cooperation. We are confident that our inspection lamps and UV detection dyes will deliver reliable, effective performance for your specific needs.