... form is of my company's process capacity for your reference, for more messages, pls contact with us freely ... ±0.05mm/±0.2mm Solder Mask Pad no Open soldermask must cover all on both side, reject ... tin on pad Pad Open reject soldermask inside the hole on both side ... pass for the first time,+/-2%(tolerance) Certificate SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! 2L PCB for home ...