| 摘要 |
PURPOSE: Writing materials for all sorts of laser devices are provided to easily use the materials in brief or on board with a laser beam, without any indicating rod in a briefing session, and to have a function of replacing a key. CONSTITUTION: The writing materials for all sorts of laser devices comprises all sorts of writing materials(1) including an alarm(5'), an electronic card chip(4'), a mobile phone calling processor(4'), a non-memory chip(5'), a measuring instrument of the water quality(1') and a detector in the inside and outside of the writing materials; a key(5) connected with a removing/attaching unit by a digital mode or manually, a white liquid storage(2) and a pen opening(2'); an eraser device and a laser shooting device(4).
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