... 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 Tg,High CTI,CEM-1,CEM-3 etc. PCB cutting machine(SMT PCBA printed circuit board)