| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard | 
			| GB/T 42756.4-2023 | English | 1104 | Add to Cart | Days<=7 | Cards and security devices for personal identification - Contactless proximity objects - Part 4: Transmission protocol | GB/T 42756.4-2023 | Valid | GB/T 42756.4-2023 |