... .RoHS,UL 2.28leds,aluminum base PCB 3.with good thermal conductivity led pcb 4.Size:132X75mm, ... RoHS,UL 2.28leds,aluminum base PCB 3.with good thermal conductivity led pcb 4.Size:132x75mm ... (mm)2mmBase MaterialAluminum AlloyCopper Thickness:1ozWidely Application:LED lighting, street lighting, lawn lamp, fluorescent lamp ... our confirmations. 28W SINGLE SIDE ALUMINUM PCB FOR LED STREET LIGHT