| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard | 
			| MT/T 842-1999 | English | 249 | Add to Cart | Days<=3 | Coal mine gas-proportioning device (pressure method) specifications | MT/T 842-1999 |  | MT/T 842-1999 |