“你知道电脑键盘能做几次烤漆吗?”杨中利这样问。这个和二手笔记本打了十多年交道的创业老兵说,“最多三次。”当键盘完成第三次烤漆后,它就会达到一个临界点,由于键盘的背面连接了数据线,过度烤漆会使得键盘功能失灵。2003年,作为高中数学老师的他在上海大学数学系攻读研究生学位,为了筹措“北美精算师”的考试报名费,他做起了二手笔记本电脑买卖的生意。当时,IBM的笔记本大多售价超过1万5,二手 “Do you know how many times the computer keyboard paint it?” Yang Zhongli asked. The veteran who has been with a second-hand laptop for more than a decade says “up to three times.” When the keyboard finishes its third paint finish, it reaches a critical point. Because the back of the keyboard is connected to a data cable, Will make the keyboard function failure. In 2003, as a high school mathematics teacher, he studied for a postgraduate degree in the Department of Mathematics at Shanghai University. In order to raise the exam registration fee for North American Actuaries, he started a second-hand laptop business. At that time, most of IBM’s notebooks cost more than 15,000, second-hand