... 2.certificate:ISO9001 3.Lead time:3-7 working days SMT keypad Print circuit board1.Certificate:ISO90012. Good Quality: UL, SGS ... peel strength 10.4n/cm12.3n/cm12.3n/cm warp and twist 0.02%≤0.5-0.75%≤0.5-0 ... free),Immersion silver/tin,Color Green ,yellow, blue ,red black and so on Materail FR-4,Aluminium-backed board,Halogen-free ... ,High CTI,CEM-1,CEM-3 etc. printed circuit board and SMT Final Assembly