The DDC3 type laser marking device developed by Domino Amjet Co., Ltd. of Illinois, USA, equipped with 3 sets of laser tubes as the ribbon selection for laser printing operation, means that the laser marking is not affected by the printed products. Effect of color changes. The code can reach 3300 characters per second in a single line. The DDC3 laser marking device can operate two sets of printing heads. In addition to uncoated metal substrates, this device can actually print any type of substrate. The device is lightweight and is supplied by indoor power. small.