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This marker is to change the design highlights the vertical shape of the tip. Slope design marker in front of the head so that when the mark will be able to see the sentence punctuation mark, clearly marked the end to know.
Slope design combines traditional contact paper written translation of the distance where the forward line. As a mark of time, this slo
North China University ofTechnology
Beijing, China
Xuying Guo,
North China University ofTechnology