Customized downlight LED Panel PCB printed circuit board , Multi Layer PCB

Customized downlight LED Panel PCB printed circuit board , Multi Layer PCB Specifications Technology Layer 1- 2 Layers Material Aluminum / Copper Based Final Thickness 0.02" - 0.18" (0.5mm- 4.6mm) tg130° - tg170° Surface Treatment Regular Lead: HASL Lead- free: Lead- free HASL, ENG Gold; OSP, Immersion silver Max/Min Board Size Min: 0.2"x0.2" Max: 43.3"x19" Min Trace width/Min Clearance 0.5oz: 4/4mil 1oz: 5/5mil 2oz: 5/7mil 3oz: 7/8mil 4oz: 10/10mil Min Hole Ring 0.