What is LED COB?
COB (Chips on Board) is a new technology of LED packaging of LED light engine. Multi LED chips are packaged together as one light module. When it lights up, it looks like a lighting panel.

How COB LED light source works?
In COB lighting, single LED chips are placed directly on a circuit board (or substrate) which has thermal properties to disperse heat. Heat dissipation is a very important aspect of LED lighting since it can have a major impact on the life expectancy of the luminary. Therefore, COB lighting can have a higher LED chip density and achieve higher light level while maintaining or improving life expectancy.

Advantage of LED COB:
COB light is a more efficient form of LED lighting for general or automotive lighting applications because:
- light has a more uniform appearance
- better life expectancy
- achieve higher light level over a large area
- COB is more stable and reliable than standard LED package.

Shenzhen Cooleeon Electronics Co., Ltd. is a professional Manufacturer & Supplier for LED Lighting Products (expecially in Flip-Chip COB area) who has around 10-year experience in Gongdong of China.

Cooleeon Electronics has a complete & scientific Quality Management system, with a number of very experienced engineers and technicians, and with an remarkable productivity (equipped with full of advanced high-tech equipment and 22 automatical production lines), who is at the top ranks in COB industry.

For the passed 10 years, Cooleeon Electronics mainly focused on the research & development of LED Chips Packaging, we have accumulated very rich eaxperience in Vertical-Chip and Flip-Chip technology, and have serviced very many companies all over of the world. Our products manily used in indoor lighting, car lighting, traffic lighting, office lighting, industrial lighting, outdoor lighting etc.

Our products are widely sold to abroad and domestic markets, and got very good high evaluations from our customers.

“Quality First” is always the driving power for Cooleeon People. We are always trying to supply best products and service for you!

Q1. Can I have a sample order for cob led lights?

A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.

Q2. What about the lead time?

A: Sample needs 3-5 days, mass production time needs around 2 weeks.

Q3. Do you have any MOQ limit for cob led light orders?

A: For the existing products, any quantity is available. But for customized products, there's MOQ (500pcs for example).

Q4. Is the COB LED light waterproof?

A: The wiring part need to be specially handled, then the light is totally waterproof.

Q5. Are there any important tips when using the COB LED lights?

A: Firstly, must use correct power supply (Voltage and Current) for the COB.

Secondly, must add heatsink/ radiator when light it up.

Q6. How do you ship the goods and how long does it take to arrive?

A: For small orders, we usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. For large orders, we usually use Airline and sea shipping methods which may take a litter longer.

Q7. How to proceed an order for cob led light?

A: Firstly, let us know your requirements or application.
Secondly, We quote according to your requirements or our suggestions.
Thirdly, customer confirms the samples and places deposit for formal order.
Fourthly, We arrange the production.

Q8. Is it OK to print my logo on led light product?

A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q9: Do you offer guarantee for the cob products?

A: Yes, we offer 1 year warranty to our products.

Q10: How to deal with the faulty?

A: Firstly, Our products are produced in strict quality control system and the defective rate will be less 
than 0.2%.
Secondly, during the guarantee period, we will send new lights with new order for small quantity. For 
defective batch products, we will repair them and resend them to you or we can discuss the solution i
ncluding re-call according to real situation.