94年4月份，上海市政府组织上海市各有关单位前往南方（海南岛、广州、深圳）发达地区对条形码的应用进行考察。为了使上海尽快与国际接轨，赶上和超过南方先进地区，市有关部门要求考察组人员回到本单位后尽快着手落实应用和开发。上海铁路局标准计量所也派专员前往参观考察， In April 1994, the Shanghai municipal government organized all relevant units in Shanghai to visit the developed areas of the South (Hainan Island, Guangzhou and Shenzhen) to examine the application of bar codes. In order to bring Shanghai into line with international standards as soon as possible and to catch up with and surpass the advanced areas in the south, relevant departments of the municipalities require inspection team members to start applying and developing as soon as possible after returning to their own units. Shanghai Railway Bureau standard metrology institute also sent a commissioner to visit,