... certificate:ISO,UL and ROHS Lead-free HAL,1.6mm thickness 1 layer Lead-free HAL LED bulb PCB1.We have ... & Bent0.75%13Insulation Resistance>1012 Ω Normal14Electric strength>1.3kv/mm15S/M abrasion>6H16Thermal stress288°C 20Sec17Test Voltage50-300V18Min. blind/buried ... , Imsn OSP, Plating AG, Plating gold20MaterialsFR4,H-TG,Teflon,Rogers,Ceramics,Aluminium, Copper base 1 layer Lead-free HAL LED bulb PCB