Special legal opinion of Beijing Zhonglun Law Firm on the Shenzhen Stock Exchange's "Letter of Concern on Jiangsu Yitong High-Tech Co., Ltd."

Announcement on Reply to Letter of Concern of Shenzhen Stock Exchange

Supplemental Undertaking on Share Circulation Restrictions

Detailed Equity Change Report

Short form report on changes in equity

Huatai United Securities Co., Ltd. on the company's detailed equity change report of the financial adviser's verification opinion.

Announcement on the Notice of Convening the First Extraordinary General Meeting of Shareholders in 2021

Announcement on Exempting the Voluntary Share Lock-up Commitment of the Controlling Shareholder of the Company

Independent Director's Independent Opinion on Waiver of Voluntary Share Lock-up Commitments by Controlling Shareholders of the Company

Notice on the transfer of the share agreement and the proposed change of the controlling shareholder and the actual controller.

Announcement on Resolutions of the Fifteenth Meeting of the Seventh Board of Supervisors

Announcement on Resolutions of the Seventeenth Meeting of the Seventh Session of the Board of Directors

Shanghai Oriental Huayin Law Firm's Special Legal Opinion on the Verification of Stock Trading by Insider Information Insiders on the Termination of Major Asset Restructuring

Verification Opinions of First Venture Securities Underwriting and Sponsorship Co., Ltd. on the Company's Self-examination Report on the Sale and Purchase of the Company's Stocks by Insiders of Insider Information Related to Termination of Major Asset Restructuring Matters

Self-examination report on the trading of the company's shares during the self-examination of insider information related to the termination of the issuance of shares and the payment of cash for the purchase of assets and the raising of matching funds.

Announcement on Using Part of Idle Own Funds to Purchase Financial Products

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