---
title: "The three major A-share indices collectively fell at the midday break, while the deep-sea technology concept surged"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/246921672.md"
description: "36Kr learned that the three major A-share indices collectively fell during the midday break, with the Shanghai Composite Index down 0.04%, the Shenzhen Component Index down 0.42%, and the ChiNext Index down 0.84%; the sugar substitute, deep-sea technology, and photovoltaic sectors led the gains, with GUOLIAN AQUATIC and SK hitting the daily limit, Sanyuan Biotechnology rising over 14%, and Dongfang Risheng rising over 6%; high-frequency PCB, advanced packaging, and military stocks saw the largest declines, with Blue Arrow Electronics down over 7%, Shengyi Technology and Beifang Navigation down over 4%"
datetime: "2025-07-02T03:53:46.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/246921672.md)
  - [en](https://longbridge.com/en/news/246921672.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/246921672.md)
generator: "portal-rs"
---

# The three major A-share indices collectively fell at the midday break, while the deep-sea technology concept surged

36Kr learned that the three major A-share indices collectively fell during the midday break, with the Shanghai Composite Index down 0.04%, the Shenzhen Component Index down 0.42%, and the ChiNext Index down 0.84%; the sugar substitute, deep-sea technology, and photovoltaic sectors led the gains, with GUOLIAN AQUATIC and SK hitting the daily limit, Sanyuan Biotechnology rising over 14%, and Dongfang Risheng rising over 6%; high-frequency PCB, advanced packaging, and military stocks saw the largest declines, with Blue Arrow Electronics down over 7%, Shengyi Technology and Beifang Navigation down over 4%

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---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**