| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SJ/T 9564-1995 | English | 239 |
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Days<=2
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Quality grading standard for electret microphones
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SJ/T 9564-1995
| Obsolete |
SJ/T 9564-1995
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