Home / Standards / GB/T 14140-2009 GB/T 14140-2009 Abolished Test method for measuring diameter of semiconductor wafer 硅片直径测量方法 Standard Type GBT ICS 29.045 CCS H82 Status 废止 Issue Date 2009-10-30 Implementation 2010-06-01 Responsible Dept 国家标准委 Drafting Unit N/A