Industrial LED Lighting Built for the Toughest Sites.
Direct-from-factory LED flood lights, high bay, tri-proof, explosion-proof, street, and solar lighting — engineered with die-cast aluminum housing, IP65 sealing, and high-efficiency LED chips. Specified for warehouses, oil & gas, mining, ports, sports fields, and roadway projects.
Industrial LED Lighting. Engineered in China Since 1999.
Sunjoylight is the international brand of Changzhou Shuangjia Electrical Co., Ltd. — an industrial LED lighting manufacturer established in 1999. We design and produce six core product families for industrial and outdoor applications: flood lights, high bay lights, tri-proof lights, explosion-proof lights, street lights, and solar lighting. Our fixtures are deployed in projects across more than 50 countries.
Sunjoylight holds FCC, CE, and CCC certifications. Our SJFB explosion-proof series is additionally certified to GB/T 3836-2021 and engineered in accordance with the IEC 60079 series. OEM and ODM partnership available for project-volume buyers.
Six Core Product Families. One Manufacturer.
From 50W floods to 1200W UFO high bays, every fixture is engineered with high-efficiency LED chips, die-cast aluminum housing, and IP65 sealing. Click any series to view spec sheets, IES files, and DIALux-compatible photometric data.
LED Flood Lights
Stadium flood lights · outdoor flood lighting · industrial yard illumination
LED High Bay Lights
UFO high bay · linear high bay · warehouse & factory lighting
LED Tri-Proof Lights
Waterproof · vapor-tight · corrosion-resistant linear LED
Explosion-Proof Lights
Hazardous area lighting · oil & gas · chemical · mining
LED Street Lights
Cobra head · roadway · municipal & highway lighting
Solar LED Lights
All-in-one solar street lights · off-grid · solar flood lights
Built for Your Industry. Not "General Use".
Industrial LED lighting fails when generic. Pick your sector — we'll show you the IP ratings, beam angles, and luminaires that actually pass project spec.
Oil & Gas
Refineries · pipelines · platforms
Warehouse Lighting
High bay · distribution centers
Factory & Plant
Manufacturing · assembly lines
Mining & Tunnels
Underground · IP65 corrosion-proof
Chemical Plants
Hazardous areas · vapor-tight
Ports & Terminals
Salt-spray tested · high mast
Sports & Stadiums
Stadium flood lighting
Roadway Lighting
Municipal · highway · solar
Agriculture
Livestock · greenhouse
Marine & Offshore
IP67 · marine-grade alloy
Engineering, Quality, and Capacity — Under One Roof.
Direct-from-factory pricing without compromising on the engineering rigor that B2B procurement teams audit. Three reasons our clients keep coming back.
In-House R&D and Photometric Design
Our engineering team designs every fixture from scratch using DIALux and AutoCAD. We deliver IES/LDT photometric files with every quote, so your specifiers can validate uniformity, glare control, and lux levels before procurement signs off.
In-House SMT Lines and Automated Assembly
Our LED fixtures are built on our own SMT pick-and-place lines, reflow soldering equipment, and automated inspection systems — not outsourced to third-party board-houses. This vertical integration gives us traceability on every batch and consistent quality across container-volume orders.
Factory-Direct Scale for Project-Volume Orders
Multiple automated assembly lines and SMT stations support large project volumes without the long lead times of trader-sourced supply. Direct manufacturing means competitive pricing, traceable batches, and the flexibility to handle OEM/ODM partnerships.
Tell us about your project.
Send your specs — fixture type, quantity, target market — and a real engineer responds within one business day with quote, IES files, and lead time.
Built for Buyers of Every Scale.
Whether you're specifying for a single project, building a regional distributor network, or sourcing wholesale containers — we structure pricing and service to fit how you buy.
End Users & EPCs
Project specifiers, facility managers, and EPC contractors who need fixtures matched to specific lux levels, IP ratings, and environmental conditions for a single deployment.
- Project-quantity pricing (50 pcs+)
- IES photometric files for DIALux/AGi32
- Free samples on qualifying RFQs
Distributors & Importers
Regional distributors building catalogues for their local markets. We provide consistent supply, competitive landed cost, and the certifications you need for customs clearance and dealer support.
- Exclusive regional territory available
- Marketing collateral & product training
- Stable lead times & forecast support
Wholesalers & Trading Co.
Container-volume buyers and trading companies who need factory-direct pricing, fast SKU turnaround, and the manufacturing capacity to handle repeat orders without delay.
- Container-direct (FCL) pricing
- Private-label / OEM packaging
- Dedicated production scheduling
Built to Spec. Tested to Fail.
Every Sunjoylight luminaire passes through five test stations before it ships. Engineering choices our customers care about — and the ones their procurement teams audit.
High-Efficiency LED Chips
SMD 3030 / 5050 chips delivering up to 160 lm/W. Bin-tested for color consistency across batches.
IP65 Sealed Enclosure
Silicone gasket + tempered glass. Tested in our IP rating chamber for water, dust, and pressure-jet resistance.
Die-Cast Aluminum Heat Sink
Multi-fin geometry for maximum thermal dissipation. Junction temperature kept below 65°C in full-load testing.
50,000-Hour Rated Lifespan
LM-80 test data on file. Aging-station validated. Standard 5-year warranty across all core product families.
Built on 25 Years. Not 25 Months.
Other Chinese suppliers chase trends. We've been doing industrial lighting since 1999 — and we built the engineering culture you need for project-grade specifications.
Real Factory, Real Engineers
Integrated facility with SMT lines, die-casting, and a photometric lab on site. No trading-company middlemen.
Quality Built Into the Line
Every batch tested in our integrating sphere, salt-spray chamber, IP rating tank, and aging stations before it leaves the factory.
Worldwide Shipping
Active buyers across Europe, the Middle East, Latin America, and Southeast Asia. Documentation tailored to your destination.
OEM / ODM Flexible
Custom wattage, voltage, beam angle, branding, packaging. Flexible MOQ from 500 units.
Global Logistics Coordination
FOB Shanghai · CIF · DDP · door-to-door. Direct shipping options to wherever your project is.
24-Hour Engineering Response
Dedicated technical team across time zones. Your project moves forward while you sleep.
From Cold Storage
to Industrial Yards.
Every deployment teaches us something. Real projects with measurable outcomes — lumen retention, energy reduction, downtime avoided.
2,400 explosion-proof luminaires deployed across Zone 1 areas. Project specification passed on first inspection.
Distribution center retrofit. UFO 200W high bay fixtures replaced legacy metal halide, cutting energy use while improving light uniformity.
800 all-in-one solar units for an off-grid roadway. Two-year field performance data on file.
We compared six Chinese suppliers for the refinery upgrade. Sunjoylight's engineering team understood the hazardous-area requirements without us having to explain twice. Documentation was thorough — the project moved forward without delays.
Tell us about your project.
Get a quote within 24 hours.
Share your application — environment, requirements, quantity. A real engineer responds with a tailored quote, IES files, and timeline within one business day.