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But in many places,people don't need the pencils that sharpener sharpens,for example,the carpenters sometimes need blunt or flat pencils,and then painters also don't use sharpened pencils,so people usually sharpen the pencil which is what they need with knife.However,when sharpening the pencils with it,to be labor-saving,people will blade on the knife unconsciously, this way,not only will it make users be painful and be dirty,but also be hurt.
Security Knife is a kind of design that is added a soft material which can be easy to slide,and it will be convenient to use and protect users' fingers greatly.
Changzhou City, China
Rui Dazhi Chen Yaxin Xu Xiaobo Man Qinghua