12L Winding PCB Adapter 4oz High TG
They required high technology requriement such as:
1) Material:high TG material: Critical RC% and copper foil choose.
2)Copper thickness: heavy copper 3OZ to 10OZ,
3) Special technology burid holes, depth drilling, PI materail used etc.
4)) Resin plugging+hole plated over,
5)Special soldermask to be taken high voltage.