Tube LED 1, T8 tube 1500mm 25W 2, LED: 360pcs SMD3528 3, 2-3 Years` ... pins of the 4. So, if there is the ballast there, it doesn`t matter. Just have to connect ... span, big light decay.a): PCB & The heat-conducting glue:PCB-We are using dual PCB, currently, most companies are using ... the single PCB.Top Heat-conducting ...