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Sumbulbs DC Chip On Board 10W 20W 30W 50W 200W Round COB LED Light Source Super Bright 3000K 4000K 6000K White LED Bulb Lamp DIY

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Emitting Color:
Cold White 6500K Warm White 3000K Natural White 4200K
2011 3W 9V 2011 5W 15V 2011 7W 21V 2820 3W 9V 2820 5W 15V 2820 COB 7W 21V 2820 COB 10W 30V 2820 COB 12W 36V 4336 Thicken 3W 4336 Thicken 5W 15V 4336 Thicken 9W 27V 4432 COB 10W 30V 4432 COB 15W 30V 4432 COB 20W 30V 4432 COB 30W 30V 6042 COB 10W 30V 6042 COB 15W 45V 6042 COB 20W 30V 6042 COB 30W 36V 7660 COB 20W 30V 7660 COB 30W 30V 8070 COB 50W 30V Moon COB 50W 12V Small Sun COB 50W 1 Big Sun COB 200W 12V 2820 Double Color 3W 2820 Double Color 5W 2820 Double Color 7W
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Sumbulbs DC Chip On Board 10W 20W 30W 50W 200W Round COB LED Light Source Super Bright 3000K 4000K 6000K White LED Bulb Lamp DIY


Please carefully check the working Voltage and Current for the LED COB before you using it, or contact us for help.

Sumbulbs is a new store here in Aliexpress, but a old manufacturer for LED COB and LED lights.

Sumbulbs has been in the LED industry for around 11 years. And we are the original MANUFACTURER for the most LED COB light source as you can find in Aliexpress.

You are guaranteed much more stably quality and after-sales service from us. And we promise you the lowest price in Aliexpress!

And we accept customized orders (OEM / ODM) for large quantity, welcome to contact for further talking.

Please check the LED COB details for each mode below:

Sumbulbs 5W 10W 20W 30W 50W 200W Round COB LED Light Source Chip On Board Lamp Warm Natural Cold White Integrated Circular COB

For other LED COB Strip, please click the below picture for more details:

What is 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 COB:

COB lights are 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


10W 20W 30W 50W Rounded Integrated COB LED Light Source Warm Natural Cold White LED Chip On Board Beads Bulb for DIY Spotlight

Shenzhen Sumbulbs Environment Technology Co., Ltd., is a professional Manufacturer & Servicer for LED Lighting who has around 10-year experience in China.

Sumbubls Company has a complete & scientific Quality Management system, with a number of very experienced engineers and technicians, and is equipped with full of advanced high-tech equipment and production lines.

Sumbulbs mainly focused on the research & development of LED Lighting resource, the designing and producing of LED lights. Products range from COB chip, Ceiling Lights, Spotlights, Crystal Lamp, Tube Lights, Track Lamp, Street Lights, Miner Lamp, Project Lamp, Sunlight Lamp, to Flash Lights etc. Our products are widely used in hotel lighting, room lighting, office lighting, ourdoor lighting and industrial lighting and other lighting projects.

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 Sumbulbs People.

Sumbubls, is on the road to be the next excellent GIANT in Environment Lighting.

Sumbulbs 5W 10W 20W 30W 50W 200W Round COB LED Light Source Chip On Board Lamp Warm Natural Cold White Integrated Circular COB

1. Please do confirm the pricing / shipping and other details with the supplier before you placing an order.

2. Please do make sure that you’ve read the entire description and agree to the transaction before the shopping.

3. We accept Alipay, West Union, T/T(Bank transfer ), PayPal and credit card . All major credit cards are accepted through secure payment processor ESCROW.

4. If you can’t checkout immediately after auction close, please wait for a few minutes and retry.

5. Payments need be finished within 15 days, or the order will be canceled and any promotion discount will be invalid.

Sumbulbs 5W 10W 20W 30W 50W 200W Round COB LED Light Source Chip On Board Lamp Warm Natural Cold White Integrated Circular COB

1. If the goods is DEFECT/ BROKEN when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or refund. But the goods must be back in factory condition. Please contact us in advance and double check the return address before you return it.

2. If item is defective in 3 months, we could send you a new replacement for free or offer full refund after we receive the defective item.

3. If item is defective in 12 months, we could also offer you replacement service, but you have to pay for the extra shipping expenses.

Our aim is to provide Top Level Customer Service, and our customer service specialists are always standing by to solve any of your problem.

We greatly appreciate your 5-STAR POSITIVE feedback and please do not leave a NEGATIVE feedback without asking for help.

Sumbulbs DC Chip On Board 10W 20W 30W 50W 200W Round COB LED Light Source Super Bright 3000K 4000K 6000K White LED Bulb Lamp DIY

Shipping & Payment


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
If you received the wrong item you can request a refund or a reshipment.
If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of Discovery Market (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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