| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard | 
			| GB/T 21795-2008 | English | 274 | Add to Cart | Days<=3 | Testing of chemicals -- Simulation test Aerobic sewage treatment -- Biofilms | GB/T 21795-2008 | Valid | GB/T 21795-2008 |