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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 1406.3-2021 |
Types and dimensions of lamp caps—Part 3：Prefocus caps 灯头的型式和尺寸 第3部分：预聚焦式灯头 |
China National Standards 3：Prefocus |
 English PDF |
| GB/T 1406.3-2008 |
Types and dimensions of lamp caps - Part 3：Prefocus caps 灯头的型式和尺寸 第3部分：预聚焦式灯头 |
China National Standards 3：Prefocus |
English PDF |
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