Home / Standards / GB 12641-2007 GB 12641-2007 Abolished Safety requirements for handling and operation of audiovisual teaching equipment and syatems 教学视听设备及系统维护与操作的安全要求 Standard Type GB ICS 97.020 CCS L09 Status 废止 Issue Date 2007-06-05 Implementation 2007-09-01 Responsible Dept 工业和信息化部（电子） Drafting Unit 工业和信息化部（电子）