Structure-T10 LED bulb: Customized COB LED chip; Original iron pin; Original anti high temperature glass; Original high strength glass socket Structure-T20/T25/S25/FOG LED bulb: Customized COB with 12 chips; Customized COB with 60 chips; COB with aluminum PCB-top, COB with soft PCB-side; Aluminum heat sink body; Built-in intelligent driver; High quality socket. Customized COB LED chip: Top quality customized COB with aluminum PCB-top and COB with soft PCB-side; COB with aluminum PCB-top: 0.3W/chip*12pcs=3.6W, 12.5lm*12pcs=150lm, 41.7lm/W; COB with soft PCB-side: 0.3W/chip*60pcs=18W, 12.5lm*60pcs=750lm, 41.7lm/W. Aluminum PCB-top, soft PCB-side: Aluminum PCB-top: high heat-conduction, much better than normal glass fiber board PCB; Soft PCB-side: unique design PCB for unique soft/flexible COB. Aluminum body: Aviation level aluminum alloy; Integrated body and precise CNC machining for excellent heat conduction; Large heat sink surface area for superior cooling performance. Driver: Stable and efficient; Constant current, non-polarity; High quality SMD components. Socket: Original high strength glass socket for T10; Original adapter, standard and small; High strength, high insulation, anti-corrosion; Wider and stronger polarity pin; PA66+GF15 Plastic material, anti 200℃ high temperature; Plug & play. Lighting: Available color: T10: white/yellow/blue/red/green, T20/T25/S25/fog: white/yellow/red; High lumen: T10: 100LM/white, 80LM/yellow, 13LM/blue, 25LM/red, 80LM/green, T20/T25/S25/fog; Beam angle: 360°; Good lighting pattern. Testing: We have integrating sphere tester and other professional testing machines; All products in the order will be tested before ship out. Installation: Easy installing, plug and play, fits for almost all cars; CAN connect an extra resistor If have canbus problem, like error on dash board, fickler, etc. Warranty: Take video of the problem to replace new or refund. Package: Blister package: elegant, blister is sealed with high frequency plastic welding machine; Box package: supereme, high-end; Customized package is accepted. Welcome to inquiry BULBTEK auto LED headlight and car led bulbs.