| 摘要 |
A protective sleeve for a plug connector of an optical fiber includes an axial hole via which the plug connector is extended to firmly locate thereat, a flexible connecting element integrally formed on an outer wall of the protective sleeve to extend outward by a predetermined distance, and a dust cap integrally connected to an outer end of the flexible connecting element. The dust cap may be directed to cover an outer end of the plug connector located in the axial hole of the protective sleeve and thereby ensures good light signal transmission quality via the optical fiber.
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