UV laser high-precision engraving LED plastic panel of intelligent building intercom system   The high-precision 355nm ultraviolet solid-state laser developed and produced by RFH can mark the LED plastic shell and engrave the required text and pattern. In addition to the controllable size and shape of the engraved text, it can also ensure that even if there are more texts, they will never overlap in a small area, resulting in illegibility. And even in long-term use, the text on the LED plastic shell will never be blurred or distorted, so users do not have to worry about losing guidelines or instructions, which can extend the life of the product and effectively guarantee the quality of the product.