| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SJ/Z 9143.1-1987 | English | 169 |
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Days<=2
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hearing aids. Part 6: Characteristics of electric input circuits for hearing aids
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SJ/Z 9143.1-1987
| Obsolete |
SJ/Z 9143.1-1987
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