Double Sided PCB 2-layer gold plating PCB Layer Number:4 Materials:FR4 Board thickness:1.6mm Surface technique:Plating gold Minimum hole size:0.20mm Minimum Line/Space:0.12mm/0.12mm Ink:Taiyo Thermal Temperature:288 C.Degree BGA, Gold Finger Our products are used in a variety of electronic applications, including hand-phone motherboards, LED of mobile, computer display card, blind&buried board, wireless router, medical equipment, MP4 players DVD players GPRS, ect.