Foreign trade orders with a circuit board exceeding 2 meters in length

Plate: FR-4, plate thickness: 1.5MM, copper thickness: H/HOZ, minimum drilling nozzle 0.3MM, copper sinking process for removing adhesive residue, hole copper 25UM. Outer line: minimum line width 0.23MM, minimum line spacing 0.12MM, surface finish copper thickness 37-55um, testing method: flying needle. Stripping/etching: minimum line width 0.2MM minimum line spacing 0.12MM tolerance:+-20% plate thickness tolerance:+-0.1mm