Why to Partner with WELCOB?
Headquartered in Shenzhen, China, WELCOB was awarded the China National High-Tech Enterprise certification in 2021 with over 20 years of expertise in LED packaging and semiconductor innovation. Specializing in high-end LED COB technology, PCB design, and lighting solutions, we aspire to be a globally recognized leader in premium LED light sources. Our services go beyond product delivery, focusing on building enduring partnerships that drive innovation in the lighting industry.
By choosing WELCOB, you gain access to:
- Tailored LED solutions for diverse applications, including bi-color, drones, fishing, photography, smart led and more.
- Can ensure led design passing international certifications (like RoHS, CE, ETL, KC, PSE etc.) with high quality performance to meet local regulatory requirements.
- Global logistics support optimized for all the markets.
- Ongoing technical expertise and client-focused care to fuel your great business growth.
About WELCOB
Shenzhen Colighting Ltd (WELCOB) was founded in Shenzhen, China in 2013 and located in Pingkui Road, Pingshan District, Shenzhen, WELCOB was awarded the China National High-Tech Enterprise certification in 2021 focusing on high-end LED COB technology development, PCB circuit design and LED lighting solutions. WELCOB Strives to bring in high-end machines for full-automatic production and aging test equipment for making itself a leading International LED production base.
Main products includes DC COB and AC COB (DOB), Bi-color COB, drone COB, fishing COB, photography COB, IR COB LED, glass COB LED, RGBCW COB, UV COB LED, horticultural COB LED, full spectrum COB LED, CSP COB LED, smart LED and PCBA. WELCOB provides customized design and professional support for LED light source. We have common led assembly process for commercial cob and we have eutectic bonding process for ultra-high power COB (>1000W) and we have powder spraying process for multi-color COB LED and we have RFID tracing technology for LED inventory management system.
WELCOB focus on the concept of "High Quality, Zero Defect". We execute strict quality control in every step from supply chain to engineering design and to the production. WELCOB has 20+ years of research and development in LED package and semiconductor fields. WELCOB strives to become a world famous brand of high-end LED light source.
Our Product
DC COB and AC COB (DOB), bi-color COB, drone COB, fishing COB, photography COB, IR COB LED, glass COB LED, RGBCW COB, UV COB LED, horticultural COB LED, full spectrum COB LED, CSP COB LED, smart LED and PCBA.
Product Application
Commercial Lighting, indoor lighting, outdoor lighting, industrial lighting, landscape lighting, horticultural Lighting, UV lighting, emergency lighting, specialty lighting, traffic lighting, intelligent lighting, drone lighting, health and medical Lighting.
Our Certificate
RoHS, CE, ETL Certifications
Awarded the National High tech Enterprise Certification
Obtained Utility Model Patent: System-level Integrated Lighting Module
Production Market
The United States, Vietnam, Japan, Britain, Italy, Russia, India, Brazil, Spain, the Middle East and other countries and regions.
Production Equipments
High-end machines for full-automatic production and aging test equipment, which makes WELCOB become a leading International LED production base.
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Flip Chip Bonding Machine |
Wire Bonding Machine |
Eutectic Bonding Machine |
Reflow Soldering Machine |
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Dam Dispensing Machine |
Glue Dispensing Machine |
Phosphor Coating Machine |
Curing Oven |
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Spectrometer Testing Equipment |
Aging Testing Equipment |
High Accuracy Array Spectroradiometer (Everfine Integrating Sphere, the No.1 Brand in China) |
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Our Services
WELCOB are dedicated to delivering exceptional LED light source solutions to our global B2B clients. Our comprehensive service framework spans pre-sales, in-sales, and after-sales phases, ensuring seamless support from initial inquiry to final application.
Pre-Sales Services
We know that selecting the optimal LED light source is critical to your business success. Our pre-sales services are structured to provide clarity, expertise, and confidence in your decision-making process.
Free Product Consultation And Fast Technical Guidance
Whether you require DC COB, AC COB, or specialized solutions like bi-color, fishing, photography, RGBCW, drone, horticultural, glass COB LEDs, we provide tailored recommendations to meet your project needs.
Professional Custom Design Solutions
We provide customized services from concept design to prototype development for SMD & COB modules (from high-power COB (>1000W) to multi-color COB LEDs) that meet specific light efficiency, color temperature or size requirements.
Supporting a variety of processes such as eutectic bonding (suitable for ultra-high power COB) and multi-color powder coating process.
Sample Provision And Evaluation Support
Customized COB prototyping with 7-15 days rapid sampling!
We can provide free samples for you to evaluate.
Our technical team will assist you in testing and validating samples in practical applications to ensure their performance and compatibility meet your expectations.
In-Sales Services
Once you partner with us, our in-sales services ensure a streamlined and efficient process, allowing you to focus on your core operations.
Order Management And Tracking
Leveraging an advanced order management system, we offer real-time updates on order status. Transparent communication channels keep you informed at every stage, from confirmation to delivery, ensuring complete visibility.
Quality Assurance And Testing
Flexible MOQ (100pcs+) with dual QC checkpoints.
Each COB model undergoes multiple times photometric testing and aging protocols to guarantee compliance with our "High Quality, Zero Defect" philosophy.
RFID-Embedded Traceability From Chip To Final Packaging
For specific LED light sources, we can provide RFID tracing chip packaging technology according to customer needs, which greatly helps customers in logistics tracking, inventory management, asset monitoring, anti-counterfeiting traceability, etc., and is widely used in high-value, large-scale deployment or strictly regulated lighting scenarios such as shopping malls, factories, and smart city projects; for ordinary consumers, it simplifies the warranty process and improves product credibility, greatly improving the customer's brand image.
Logistics And Shipping Coordination
We provide flexible shipping solutions tailored to your timeline, including air, sea, and express options. Our logistics team manages export documentation and regulatory compliance, ensuring timely and secure delivery to your location.
After-Sales Services
Our service commitment continues even after product delivery. Our after-sales support aims to provide you with long-term protection and ensure the continued success of your business.
Technical Support And Troubleshooting
We provide comprehensive technical support to help you seamlessly integrate COB modules into your products. If you encounter any problems, our expert team provides prompt diagnostics and solutions to ensure the smooth progress of your project.
Warranty And Repair Services
Our products are backed by a standard warranty covering material and manufacturing defects. In the rare event of an issue, we provide efficient repair or replacement services to minimize downtime.
Feedback And Continuous Improvement
We value your insights and conduct regular feedback sessions to refine our offerings. By incorporating client suggestions, we ensure our products and services evolve to meet your changing needs, fostering a partnership built on trust.
Our History
• Initiated foundational R&D on AC LED technology
• Established core research team with semiconductor PhD specialists
• Shenzhen Colighting Ltd was registered and established
• Obtained Utility Model Patent: System-level Integrated Lighting Module
• Fully automated SMD LED assembly production line built
• AC SMD LED modules were realized mass production
• Fully automated inverted COB LED assembly production line built
• Launched first generation COB (Chip-on-Board) prototypes
• AC COB LED modules were realized mass production
• Developed industry-leading 110V/220V dual voltages AC LED
• Obtained Patent: Waterproof COB series (IP68 rating)
• Developed Full spectrum LED series for led grow light
• Eutectic LED assembly production line built
• Developed Anti glare high CRI COB
• Developed LED light sources with multiple kinds of colors for landscape lighting
• Developed high-power ceramic COB with aluminum nitride
• Developed dimmable COB LED with switching
• Developed COB+SMD Photomixing technology
• Launched first UV-C LED modules for disinfection applications
• Moved to new production base and grow twice in both scale and production lines
• Introduced IoT-enabled COB series with WIFI / Bluetooth Mesh / Zigbee integration
• Developed multi-channels smart controller / adaptive driver
• Awarded the National High tech Enterprise Certification
• 360° double-sided COB strip LED (Milky LED series) mass-produced successfully
• Developed Bi-color, tri-color and multi-color COB series
• Developed cost-effective IR LED suitable for therapy lamps
• Pioneered rainbow COB LED with glass base
152% wider gamut vs traditional ceramics
50% better thermal shock resistance
• Commercialized 1000W-1800W marine LED series
30% energy saving for offshore fishing operations
Developed multiple solutions for drone LED (365V/385V/405V/710V, including strobe LED and remote control)
• Developed Sunlike high-power COB LED for Human Centric Lighting
Strategic Value Highlights
• 28+ invention patents portfolio across LED packaging architecture
• 93% repeat order rate from global clients since 2015
• Zero product recall record maintained for 10+ consecutive years
