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Regular FAQs on LED Filament Bulb


1. Are you trading firm or manufacturer?

We are manufacturer for sure


2. What's the chip of filament ?

Epistar chip


3. What color temperature can you provide?

Our regular color temperature is 2700K 2200K, 4000K, 6000K, we also can make other color temperature as your requirements, MOQ is 5000pcs filaments. We also can provide Green/Blue/Red/Pink/Orange colors.

2700k  is closer to Halogen lightbulbs or old Tungsten incandescent light bulbs. Customers's most favorable color temperature is 2700K


4. What about the glass covers ?

We have Clear /  Frosted / Milky White / Golden(amber)/ Smoked grey/Sand ballast(matt finish) options for our led filament bulbs.

We also have colored bulbs such as RED/BLUE/GREEN/YELLOW and etc. MOQ is 500pcs 

Smoked grey  and sand ballast(matt finish) treating, MOQ is 500pcs as well


5. What certificates do you have?

CE , RoHs for European market

ETL for North American market, ETL File number is  5002818


6. What's your market?

We mainly export goods to North America and European countries.


7. Can your bulbs be dimmable?

Yes, we make non-dimmable and dimmable versions.


8.How about your production line ability?

20,000 PCS each day so far.


9. Which substrate inside of filament?

We have ceramic and sapphire substrate for option

Ceramic is cheaper, it is 100lm/watt, sapphire is more expensive, it is 120lm/watt


10. What's the warranty?

We provide 2 years warranty on led filament bulbs


11. What filament size do you have?

For classic led filament bulbs, we use three size series:26mm/38mm/58mm

For soft led filament  or U-shaped , sizes are flexible



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