Reply of the Issuer and Sponsor to the Inquiry Letter on the Application for Issuance of Shares to Specific Objects

Reply to the Inquiry Letter on the Application for Issuance of Shares to Specific Objects by Hangzhou Gaoxin New Materials Technology Co., Ltd.

Shenzhen Stock Exchange:

We have received your "Inquiry Letter on the Application for Issuance of Shares to Specific Objects by Hangzhou Gaoxin New Materials Technology Co., Ltd." (Audit Letter [2026] No. 020055) (hereinafter referred to as the "Inquiry Letter"). Hangzhou Gaoxin New Materials Technology Co., Ltd. (hereinafter referred to as "Hangzhou Gaoxin," "the Issuer," "the Applicant," or "the Company"), together with Zhong De Securities Co., Ltd. (hereinafter referred to as "Zhong De Securities," "the Sponsor," or "the Underwriter"), the Issuer's lawyer Zhejiang Tiance Law Firm (hereinafter referred to as "the Issuer's Lawyer"), and the reporting accountant Tianjian Accounting Firm (Special General Partnership) (hereinafter referred to as "the Reporting Accountant"), have conducted thorough analysis and discussion on the issues raised in the Inquiry Letter. We have investigated the issues in the Inquiry Letter, provided written explanations for each item, and revised and supplemented the "Prospectus (Draft for Review) for the Application of Hangzhou Gaoxin New Materials Technology Co., Ltd. for Issuance of A Shares to Specific Objects in 2026" (hereinafter referred to as the "Prospectus") as required. We hereby reply as follows for your review.

Unless otherwise specified, the abbreviations in this Reply Report have the same meaning as those in the Prospectus.

The data listed in this Reply Report may differ slightly from the results calculated directly from the relevant individual items due to rounding.

The font in this Reply Report represents the following:

Bold (Bold): Issues listed in the feedback opinion

Songti: Reply to the issues listed in the feedback opinion

KaiTi_GB2312 (Bold): Revision and supplement to the Prospectus and this Reply Report

Issue 1. The application materials show that the issuer intends to issue no more than 9,760,858 shares to its controlling shareholder, Beijing Jubang Weiye Energy Technology Co., Ltd. (hereinafter referred to as Jubang Weiye), at a fixed price, with a total issuance not exceeding RMB 150 million, which will be used entirely for repaying loans and supplementing working capital after deducting relevant issuance expenses. Upon completion of the issuance at the upper limit, Jubang Weiye's shareholding ratio will increase from 19.03% to 24.82%. Jubang Weiye has pledged that the lock-up period for its subscription of shares issued to specific objects will be 18 months. On August 8, 2025, Donghang Group, Jubang Weiye, Hu Min, and Jubang Energy (Xinjiang) Co., Ltd. signed a share transfer agreement, whereby Donghang Group will transfer its 24,105,872 shares in the issuer (accounting for 19.03% of the issuer's total share capital) to Jubang Weiye through an agreement transfer.