... 2.fast delivery 3.17 years of experience in PCB industry 4.UL,SGS,ISO9001,RoHS,QS9000 and TS16949 Layer ... :1~22 layersMaterials: FR-4, CEM-3, Teflon, Aluminum, Rogers, High TgSurface finished:Lead Free HASL ... 0.25mm5Registration Solder Mask ±0.003"±0.075mm Layer to Layer ±0.0024"±0.060mm Copper Feature to ... is to demonstrate the ability of our PCB factory, if you have specific requirements, ...