预涂布感光覆铜板既可以用来轻松制作单面印制电路板，又可以在业余条件下制作双面印制电路板。其主要特点是省时快捷，即做即得，对于科研、教学、单块小批量业余电子制作是非常便利的。以下介绍用“即时得”预涂布感光覆铜板（供货信息见本期插页广告）制作双面印制电路板的 Pre-coated light-sensitive CCL can be used to easily make single-sided printed circuit board, but also in the amateur condition making double-sided printed circuit board. Its main feature is saving time and quick, that is done, for scientific research, teaching, a small batch of amateur electronic production is very convenient. The following describes the use of “instant” pre-coated light-sensitive CCL (Availability information in this issue of insert advertising) production of double-sided printed circuit board