Led Printed circuit board 1.PCB experience8 years 2.PCB certificate:ISO, ... SGS Test, RoHS Certification, ISO9001:2008 2.1-12 layer:FR-4, Alu,Rog 3.Short lead time 4.good ... resister ≥5MΩ≥5MΩ≥5MΩ test voltage 50~100DCV300DCV300DCV finished board area 400×500mm500×600mm500×600mm Min line width&spacing ... black and so on Materail FR-4,Aluminium-backed board,Halogen-free,Lead-free compatible,High Tg,High CTI, ...