---
title: "STOCKS | CNNC Sci-Tech Shares Flagged for Abnormal Trading After Three-Day Surge"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/290041802.md"
description: "CNNC Sci-Tech shares were flagged for abnormal trading after a 27.89% cumulative price deviation over three days in June 2026. The company issued a volatility announcement clarifying that it is not involved in the 'silicon-28' concept, despite recent media speculation. Its business focuses on industrial valves. CNNC Sci-Tech confirmed no undisclosed major matters and urged investors to assess information rationally and be mindful of investment risks."
datetime: "2026-06-17T10:55:49.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/290041802.md)
  - [en](https://longbridge.com/en/news/290041802.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/290041802.md)
---

# STOCKS | CNNC Sci-Tech Shares Flagged for Abnormal Trading After Three-Day Surge

CNNC Sci-Tech said its shares were flagged for abnormal trading after the stock’s cumulative closing-price deviation reached 27.89% over three consecutive sessions on June 15, 2026, June 16, 2026, and June 17, 2026. According to Jin10, the company issued a volatility announcement saying it had noticed recent discussions in some media, self-media outlets, and stock forums linking its business to the “silicon-28” concept. The company said its production and operations focus on industrial valves and that it is not involved in the research, purification, production, processing, or other related activities of silicon-28. It also said there were no major matters that should be disclosed but had not been disclosed, and urged investors to assess information rationally and be mindful of investment risks.

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