... and 2 .Size: 1020mm*1220mm .Features: 1) The end face of foil covered board should be tidy without any delamination . ... nick, pitting and glue spot on the copper foil covered face is not allowed. Any color changing or dirty can be ... /cm3 hydrochloric acid or proper organic solution .3) On laminated face, the defects such as bubble, impressed pitting, nick and glue ...