本修改单业经国家标准化管理委员会于2003年3月5日以国标委农轻函200321号文批准,自2003年8月1日起实施。3.11条“3.11链罩(在目前条件下实施日期允许工贸双方协议后另行再确定)”改为“3.11链罩。”(中轻联)GB14746-1993《儿童自行车安全要求》国家标准第1号修改单$中轻联 This revision of single business by the National Standardization Management Committee on March 5, 2003 with the national standard letter of Agriculture letter No. 200321 approved since August 1, 2003 come into operation. 3.11 “3.11 Chain cover (under current conditions, the date of implementation allows both trade and industry to agree after the re-determined)” to “3.11 chain cover.” (China Light Alliance) GB14746-1993 “Children’s Bicycle Safety Requirements” National Standard No. 1 Change the number of a single Light Union