| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Related Standard | Status | Google Book |
| GY 50-1989 | English | 199 |
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Days<=2
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(FM radio transmitter to run technical indicators rank (mono and stereo))
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GY 50-1989
| Obsolete |
GY 50-1989
|