In some of the children in primary school, because homework to the teacher will have a day, a day of job is distributed to parents on the phone, also need to use laser engraving print learning materials, in the beginning, for the children to learn more time after receiving the children homework, every day will go to line up to help children with laser engraving give out the learning materials, feel that they are given. Later I feel that every day there is data to be promised, feel that every day to run out, is not a good way to resolve! Finally, I had to install a laser engraving into my home, so that I could not only instruct the children’s homework, but also print learning materials at parties outside every day. It’s really convenient to use!