... )) (The longest processing length) About 1m (Layer numbers of board) Single,pair,three layers,four layers (Shell-resistant intensity) 1.0N ... ) R=7,180°,100000times,there is no broken circuit crease(single panel)(Dielectric strength) 1000V/mm(Surface disposing) Electroplate,nick-gold ... ,chemical-plating tin,gushes out the tin,anti-oxidant Flexible PCB Board