If you are planning to import round led board,Website:http://www.ljpcb.com, Longjiang Circuit International Limited is one of the leading round led board manufacturers and suppliers, welcome to contact with our factory.type:round LED boardfinal board thickness:1.6mmfinal copper thickness:35umsolder mask colour:whitesilk screen colour:blackMin. line width/space:1.0mm/0.8mmmin diameter of finished hole:1.0mmsurface finish:HAL Lead