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China suppliers offer versions for indoor and outdoor, automotive and industrial lighting. Models come in white, and warm and cool white.
COB LED modules from China companies have rated power of 3 to 100W, luminous efficacy of up to 130 lm/W and more than 70 CRI. These come in square, round and bar-shaped kinds, and white, and warm and cool white. The products suit indoor and outdoor, automotive and industrial lighting. All comply with RoHS requirements.
Suppliers use LED chips, the key component, sourced from foreign providers, mostly from Taiwan and the US. Other manufacturing inputs such as substrates, bonding wire and adhesive, they obtain from local sources, although requests for imported ones are accommodated.
The cost of materials and components dropped slightly in the past year, resulting in a 5 percent price reduction. The majority of makers expect this trend to continue in 2016.
Here is a selection of COB LED modules from China.

BOSMFC Optoelectronics Co. Ltd's model DSBJ_F00204041 COB LED module has 3W rated power and 60mA forward current. Its viewing angle is 130 degrees. The unit uses an Epistar chip. It meets RoHS requirements.
The minimum order is 100 units. Delivery is within 15 days.

For vehicle lights, the model ZH-C17AP COB LED module from Foshan Evercore Optoelectronic Technology Co. Ltd has 125 lm/W luminous efficacy and more than 70 CRI. Its rated power and voltage are 18W and 8 to 12V, and current is 1,800mA.
The negotiable minimum order is delivered within 7 days.

This COB LEDmodule from Jarada Industry Ltd, DY2828-20 model, has more than 100 lm/W luminous efficacy, 2,800 to 6,500K adjustable color temperature and over 70 CRI. Its rated power is 3 to 9W. The unit measures 28x4.3mm.
The minimum order is negotiable. Delivery is within 7 days.

Shenzhen Stansen Electronics Co. Ltd's model STS-150C COB LED module has 14,000 to 16,000 lumens, 3,000 to 3,500K color temperature and 140-degree viewing angle. Its rated power, voltage and current are 150W, 30 to 36VDC and 4,500mA. The warm-white unit carries CE and RoHS approval.
The minimum order is negotiable. Delivery is within 7 days.
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