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The most taboo is the moment of the value of the scraping and fuzzy, so the ruler to become the most care of the stationery which is used, usually we should pay attention to what?
1, first of all, the use of the method to be correct, such as the use of the material is best not to use a plastic ruler, so it will be very easy to spend the. There are a lot of people have made a mistake is in a line drawing will speed is very fast, and because the ruler of slippery features and along the ruler across. This will get numerical cost, so the speed is moderate.
2, the ruler is best not to mix with a knife or metal stationery to put together, and the pen is mixed together, the pen must be set on the cover.
3, be sure to prevent exposure and long-term sunshine, especially plastic ruler temperature resistance performance is not good, will be deformed
4, it is best not to brush cleaning, meaning that as far as possible not to dirty ruler.
