Home / Standards / GB/T 4060-2007 GB/T 4060-2007 Abolished Polycrystalline silicon - examination method - vacuum zone - melting on boron 硅多晶真空区熔基硼检验方法 Standard Type GBT ICS 77.040.01 CCS H17 Status 废止 Issue Date 2007-09-11 Implementation 2008-02-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A