| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard | 
			| GB/T 39144-2020 | English | 119 | Add to Cart | Days<=3 | Test method for magnesium content in gallium nitride materials - Secondary ion mass spectrometry | GB/T 39144-2020 | Valid | GB/T 39144-2020 |