... manufacture in china,try our best to do it! Product introduction: 1.Base material: FR-4, CEM-1,CEM-3, ... free,HAL, OSP ,ENIG4.board thiclness: 0.21mm-7.0mmintroduction of our company: 1.Professional design & service team2.Advanced production ... your interestsProtecting your Intellectual Property is job one! Our staff of trained professionals are all workingunder a strict confidentiality contract and ...