---
title: "2 consecutive trading limit for PPM(SuZhou): The commercialization process of the company's holding subsidiary COFs material project is currently in the initial stage"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/283113250.md"
description: "On April 17th, PPM (SuZhou) announced that there was unusual volatility due to the stock price increasing by more than 30% for three consecutive trading days. After verification, the company found no information that needed correction, the operating situation is normal, and the controlling shareholder has not engaged in stock trading. The commercialization process of the COFs material project of the company's holding subsidiary is in the initial stage, reminding investors to invest rationally and pay attention to risks"
datetime: "2026-04-17T08:29:14.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/283113250.md)
  - [en](https://longbridge.com/en/news/283113250.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/283113250.md)
---

# 2 consecutive trading limit for PPM(SuZhou): The commercialization process of the company's holding subsidiary COFs material project is currently in the initial stage

On April 17, **PPM(SuZhou) (300905.SZ)** announced an abnormal fluctuation in stock trading. The cumulative deviation of the closing price increase of the company's stock exceeded 30% over three consecutive trading days, which, according to the relevant provisions of the "Shenzhen Stock Exchange Trading Rules," constitutes a situation of abnormal stock trading.

In response to the abnormal stock fluctuation, the company verified the relevant matters and inquired with the company's controlling shareholder, actual controller, all directors, and senior management through phone calls and on-site inquiries. Specifically, there are no corrections or supplements needed for the information previously disclosed by the company; at the same time, the company has not found any recent public media reports that may have a significant impact on the trading price of the company's stock due to undisclosed significant information. Furthermore, the company's recent operating conditions are normal, and both the internal and external operating environments are in a healthy state. As of now, the company, its controlling shareholder, and actual controller do not have any significant matters related to the company that should be disclosed but have not been disclosed, nor are there any other significant matters in the planning stage. Upon verification, during the period of abnormal stock price fluctuation, the controlling shareholder and actual controller did not engage in buying or selling the company's stock.

Regarding risk warnings, the company has conducted a self-examination and found no violations of information fair disclosure. The company disclosed the "2025 Annual Performance Forecast" on January 8, 2026, and as of the date of this announcement, there are no circumstances that require correction of the 2025 annual performance. It is worth noting that the market has recently focused heavily on the COFs hot concept, but at this stage, the company's main business remains the research, production, and sales of chemical fiber color masterbatch products, while actively expanding into the fields of plastic color masterbatch and film color masterbatch. The COFs material project of the company's subsidiary, YaoKe New Materials (Suzhou) Co., Ltd., is currently in the initial stage of commercialization. The company reminds investors to invest rationally and pay attention to related risks

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