(1) Quick and clean, do not have to wait, soon can be handwritten;
(2) Environmental protection, no flavor;
(3) After modification, can quickly write on the clean and smooth surface;
(4) Lightweight, easy to carry;
(5) The modification traces will not be shown in the Copy or fax;
(6) Some correction belt in the use of pens, pencils, erasable pen can be difficult to write, preferably with a ballpoint pen.