---
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/280568973.md"
description: "A-share fiber optic concept stocks fluctuated and weakened, with FASTEN hitting the daily limit down, while ETERN, NanjingHuamai Technology, ZTT, SDGI, and Accelink all fell"
datetime: "2026-03-26T05:18:30.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/280568973.md)
  - [en](https://longbridge.com/en/news/280568973.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/280568973.md)
---

# 

A-share fiber optic concept stocks fluctuated and weakened, with FASTEN hitting the daily limit down, while ETERN, NanjingHuamai Technology, ZTT, SDGI, and Accelink all fell.

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