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Shenzhen Hejin Circuit Co.,Ltd is a leading 4 layer printed circuit board exporter, and one of the leading China 4 layer printed circuit board manufacturers, producers and suppliers. We export high quality products, and we are professional at 4 layer printed circuit board assembly and oem.Layer Count:4L Board Thickness:1.6MM
Copper Thickness: 35UM
base Material:FR4
Surface Finishing:Immersion gold
Solder Mask Color:Blue UL approved,RoHS compliant
http://www.hjmcpcb.com
