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Graphene Curved Filament Bulb ST58-4W




• Graphene cooling technology
• Curved filament design
• A++ energy rating
• 360° omni-directional beam
• Clear glass housing
• 90% energy saving compared to incandescent lamp
• QFN packaging driver (quad-flat non-leaded)
• Suitable for replacing all types of fixtures for
incandescent ST lamps
• 6W for 600lm, 8W for 806lm, 9W for 1055lm
• Colour temperature options from warm white to cool white (2700 to 6500 K)


Technical data

Power (W) 4.0 4.2
Input Voltage (V)


Luminous Flux (lm) 470 400
CRI (Ra) >80 >80
CCT (K) 2700 2700
Dimming NO YES
Cover Clear or Milky Clear or Milky
Base E27 E27
Size (mm) Ø58*136 Ø58*136

Product Picture


Graphene LED filament light is widely used in hotel, bar, restaurant, shopping mall, decorative lighting, indoor & outdoor lighting

Graphene Technology

With Graphene heat dissipation Technology, Junction Temperature will be 6-8 ℃ lower compared with normal bulbs.


50 Global Granted Patents

We have over 50 exclusive global patents including heat radiation filament, apperance design & other heat dissipation covering most of countries in the world.
We could promise you free of patents issues if start our cooperation.
A. Heat dissipation
B. Other heat dissipation
C. Apperance design



Why Choose us

  • Our LED graphene filament bulbs have longer working life time than common led bulbs due to the great ability of heat dissipation of graphene.
    Also we have exclusive granted patents on the graphene led lighting.
  • We also provide Graphene outdoor lighting solution including streetlight and garden light lamps applied with graphene
    technology as well.
  • Our products will reduce cost and save energy on after-sale service and repairing issues
  • The professional team working for you to serve your project
  • The powerful logistic for you to ensure product quality & safe.


Beam angle


Colour rendering index (CRI)



150 x 1195 x 13, 295 x 1195 x 9

Input voltage

230 VAC


25,000 hours



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