PCB copy board/change board (Electronic product clone), PCB backward reasoning/schematic diagram making,SMT/PCBA processing, PCB prototype/batch production, Batch component matching procurement, BOM analysis and making, Functional prototype manufacturing and test, Difficult component/module substitution, Chip decryption and program analysis, IC reverse design, Chip failure analysis, Chip codepoint extraction and copy, OEM/ODM of various finished products & semi-finished products