Our company keeps up with the changes of technology, market and user demand, and constantly develops innovative star pcb led, amber color led, 300w cob led. We take integrity, responsibility, innovation, and teamwork as our continuous pursuit goals. We are willing to work with our friends to create a better tomorrow and bring more economic benefits for everyone. We adhere to the "green, environmental protection, low-carbon" product concept, continuous improvement of work style. We hope that through the construction of corporate culture, we can stimulate the spirit of innovation and creativity among our employees and play the main role of the employees.
SMD 5050 led lumens
●Base Material : EMC + Pure Copper
●Use high bin Sanan chip or Bridgelux chip
●Only use pure gold wire with high strength
●Max Lumen efficiency reach 240lm/w @0.5w
●Various voltage like 3v,12v,24v available.
●Economy high efficiency LED for government street light.
●LM-80 test report available.

Product Specification
Electrical/Optical Characteristics--White (At TA=25°C)
Parameter | Symbol | Conditions | Min | Avg. | Max | Units |
Forward Voltage | VF | IF=80mA | 11 | -- | 12 | V |
Thermal Resistance Junction To Board | RΘJ-B | IF=80mA | -- | 8 | -- | °C/W |
Luminous Flux | Φv | IF=80mA | 200 | 220 | lm | |
Color Temperature | CCT | IF=80mA | 3000 | 3200 | K | |
CRI | Ra | IF=80mA | 80 | -- | -- | -- |
Temperature Coefficient of Forward Voltage | ∆VF/∆T | IF=80mA | −− | -2 | −− | mV/°C |
Reverse Current | IR | VR=24V | −− | −− | 10 | μ A |
Viewing Angle [1] | 2Θ1/2 | IF=80mA | −− | 120 | −− | Deg |
Packing Method
Normal packing Quantity: 1000pcs/reel in vacuum bag.

Shipping Method
Delivery time:
Order Qty<500.000pcs, 3-7 workdays.
Order Qty>500.000pcs, 7-12 workdays.
Order Qty>2000.000pcs,12-20 workdays.

Some notices about shipping:
(1) China Post mail delivery time is around 15-22 days (some need around 30 days), please kindly be a little patient while waiting for your parcels.
(2) You also consider other Express (UPS, DHL, FedEx, TNT or EMS) 2 to 8 days delivered.
(3) Please contact us at once if there are any aberrant mails.
(4) Please do send us your suggestions as you know something better than us. We would appreciate your good ideas.
(5) If you bid our China Post free shipping items, we ONLY transport via China POST. We would perform our duties same as what we have agreed.
(6) We are not responsible for any custom duty or import tax.
FAQ
Q: What’s the highest efficiency of your smd led.
A: For SMD5050 LED, highest efficiency is 220lm/w.
For SMD3030 LED, the highest efficiency is 200lm/w .
For SMD2835 LED, the highest efficiency is 195lm/w
Q: If there is LED failure, how can you support?
A:Customers provide pictures of the failed products or the samples rejected, the engineer will analyze the failure and find out
the reasons. If the failure was caused by the product quality, we will compensate with qualified replacement!
Q: Would you offer free samples?
A:Yes, for SMD LED, we can offer free sample 10-50pcs for testing purpose.
For high power led, we can offer 1-10pcs free sample for testing.
For COB LEDs, we can offer 1-5pcs free sample for testing purpose.
In general, the free sample value we offer is around 5-10USD.
If u need more qty,pls contact with us for further discussion.
Q: How long is your delivery time ? can we ship goods by our own logistic forwarder.
A: Normally our delivery time is around 5 workdays to 12 workdays depends on order volume, yes, client can use their own freight forwarder. You can order based on FOB ,EXW or CIF terms.
Q: what’s your mainly market ? which product is the most hot sale in your company.
A: Right now we have around 60% domestic business in Mainland China.other 40% of oversea business is mainly from Countries like USA, France. Russia, Poland, Argentina. India Turkey and some other middle east countries.
Currently the hot sale product are high efficiency SMD led, such as SMD5050 LED, SMD3030 LED, and SMD3535 LED in White color and other colors such as uv, ir, rgb.
Besides of this ,cob led form 10-100watt is also very welcome by our old clients.
Material&Equipment Supplier

Company Introduction
Shenzhen Guangmai Electronics Co., Ltd (also known as GMKJ LED, established in 2009), headquartered in Shenhzen, is one of China's leading LED packaging manufacturer with rich experience in LED Lighting industry. GMKJ LED, with strong R & D development and manufacturing integrated in-house, is a professional and dynamic manufacturer specializing in COB LED 2-400W, Power LEDs 1-100W, SMD LEDs, Color LEDs 275-940nm etc, which are widely applied to general lighting, horticulture, studio lighting, landscape & architectural lighting and stage lighting.
Most of our led products are LM-80 tested and approved, also with RoHS EN62471/IEC62471 etc). We have been granted for more than 100 patents both in design and technology areas. With excellent quality, diversity and reliable performance, reasonable price, and satisfactory after-sales service, all of our products comply with international quality standards and are greatly welcomed in a variety of different markets throughout the world.
GM Company Service
1. 3-4 Years quality guarantee for high power cool white led chip
2. unconditional return back if unsatisfied with quality.
3. Provide lowest cost for goods' shippments.
4. Provide customized color temperature and CRI if needed.
5. Provide full data sheet and test report for every order every item.
6. Provide CE,SGS,Rohs,UL,ISO9001 ,LM-80 CERTIFICATE.
7. Provide enough market and prices info for other accessories for your lamp manufacturers.
8. Provide PCB desgin and 1watt LED soldering and other OEM severices if suctomers need.
9. Provide VIP SPECIAL discounts for big orders and long-term cooperation customers.
We take the creation of market-competitive APP Control LED Strip Light Under Glow Exterior Car Light Kit for Jeep Truck Marine as our development vision, unremittingly devote ourselves to providing customers with excellent products and services, and strive to realize our own value in serving customers. Our company has unique advantages, so we can occupy a competitive position in the mature market environment. We are doing everything to offer our customers with best services and best products.
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