... 3.UL,SGS,ROHS,ISO9001:2008 FR4 1oz copper thickness double sided pcb Brief introdution of our company Suzhou Xinke Electronic Co ... a professional pcbmanufacturer ,our products include blank pcb, single sided pcb,double sided pcb,multilayer pcb,flexible pcb,fr4 pcb,fr2 pcb,fr1 ... Test (288±5ºC; 10 sec. inspect delamination, etc) 7.Tape Test (adhesion test) 8.Peel Test (conductor peel strength) 9 ...