688110: special report on the deposit and use of raised funds in 2021

Securities code: 688110 securities abbreviation: Dongxin Announcement No.: 2022028 Dongxin Semiconductor Co., Ltd

Special report on the deposit and use of raised funds in 2021

The board of directors and all directors of the company guarantee that there are no false records, misleading statements or major omissions in the contents of this announcement, and bear legal responsibility for the authenticity, accuracy and integrity of its contents according to law.

In accordance with the relevant provisions of the China Securities Regulatory Commission’s guidelines for the supervision of listed companies No. 2 – regulatory requirements for the management and use of raised funds by listed companies (revised in 2022) (CSRC announcement [2022] No. 15), the Shanghai Stock Exchange science and Innovation Board Listed Companies’ self regulatory guidance No. 1 – standardized operation, and the Shanghai Stock Exchange listed companies’ self regulatory guidance No. 1 – announcement form, The board of directors of Dongxin Semiconductor Co., Ltd. (hereinafter referred to as “the company”) made the following explanations on the deposit and use of the raised funds in 2021: I. Basic information of the raised funds (I) actual amount of the raised funds and time of arrival

With the approval of China Securities Regulatory Commission on Approving the registration of Dongxin Semiconductor Co., Ltd. in its initial public offering (zjxk [2021] No. 3558), and with the consent of Shanghai Stock Exchange, the company publicly issued 11056244 ordinary shares to the public in December 2021, with a par value of 1.00 yuan per share and an issue price of 30.18 yuan per share, The total amount of funds raised is RMB 3336774400, and the net amount of funds raised after deducting the issuance expenses is RMB 3063581600. The above raised funds were in place on December 7, 2021, verified by Lixin Certified Public Accountants (special general partnership), and issued the capital verification report (xksbz [2021] No. zb11526). (II) actual use and balance of raised funds in this year

Monetary unit: RMB 10000

Item No. amount

Actual amount of raised funds in place a 30858164

Less: audit fees, attorney fees and other issuance expenses B 222348

Net raised capital C = A-B 30635816

Plus: net interest income deducting handling charges D 154.24

Less: supplementary working capital e 2941500

Balance of raised funds f = C + D-E 27709740

Actual balance raised fund balance g 27932088

Difference H = F-G -222348

Note: the difference refers to the issuance expenses such as audit fee, lawyer fee and issuance handling fee that have not been replaced. 2、 Management of raised funds (I) management of raised funds

In order to standardize the management and use of raised funds and improve the efficiency and efficiency of fund use, the company has formulated the management measures for the use of raised funds of Dongxin Semiconductor Co., Ltd. (hereinafter referred to as the “management measures”) in accordance with the provisions of relevant laws, regulations and normative documents such as the company law of the people’s Republic of China, the securities law of the people’s Republic of China and in combination with the actual situation of the company. According to the management measures, the company implements a special account for the raised funds, establishes a special account for the raised funds in the bank, and signs the tripartite supervision agreement on the storage of the special account for the raised funds (hereinafter referred to as the “supervision agreement”) with the recommendation institution 6 Qinchuan Machine Tool & Tool Group Share Co.Ltd(000837) and China Minsheng Banking Corp.Ltd(600016) Suzhou Branch, Industrial And Commercial Bank Of China Limited(601398) Shanghai Hongqiao Development Zone sub branch, Hua Xia Bank Co.Limited(600015) Suzhou Branch, etc. The regulatory agreement stipulates in detail the relevant responsibilities and obligations of the issuer, the recommendation institution and the commercial bank storing the raised funds. There is no significant difference between the tripartite regulatory agreement and the model tripartite regulatory agreement of Shanghai Stock Exchange, and the company has strictly complied with the raised funds. (II) storage of raised funds in special account

Monetary unit: RMB

Closing balance of account no. of deposit bank

China Minsheng Banking Corp.Ltd(600016) Suzhou Branch 633831543231471440938 line

Industrial And Commercial Bank Of China Limited(601398) Shanghai 1001242729 Chengdu Tangyuan Electric Co.Ltd(300789) 2398086265925 Hongqiao Development Zone sub branch

Hua Xia Bank Co.Limited(600015) Suzhou Branch 124620 Shenzhen Fountain Corporation(000005) 3764239763168480

Total 279320875343

3、 Actual use of raised funds this year

The actual use of the company’s raised funds during the year is as follows:

(1) Use of funds for projects invested with raised funds (hereinafter referred to as “projects invested with raised funds”)

The actual use of the company’s raised funds in 2021 is detailed in Schedule 1 comparison table of the use of raised funds. (2) Advance investment and replacement of raised investment projects

The initial investment amount of the company’s raised investment project is 644282 million yuan, and the company has not replaced it this year.

(3) Temporary replenishment of working capital with idle raised funds

The company does not temporarily supplement working capital with idle raised funds. (4) Cash management of idle raised funds and investment in related products

During the year, the company did not conduct cash management on idle raised funds and invest in related products. (5) Permanent replenishment of working capital or repayment of bank loans with over raised funds

During the year, the company did not permanently supplement working capital or repay bank loans with over raised funds. (6) Use of over raised funds for projects under construction and new projects (including acquisition of assets, etc.)

The company does not use the over raised funds for projects under construction and new projects (including the acquisition of assets, etc.). (7) Utilization of surplus raised funds

The company does not use the surplus funds of raised investment projects for other raised investment projects or non raised investment projects. (8) Other information about the use of raised funds

1. On January 4, 2022, the 23rd Meeting of the first board of directors and the 8th meeting of the first board of supervisors considered and approved the proposal on using part of the over raised funds to permanently supplement working capital, and agreed that the company would use part of the over raised funds totaling RMB 693 million to permanently supplement working capital. As of the date of this report, the amount of excess raised funds actually used by the company for permanent replenishment of working capital was 693million yuan.

2. On January 4, 2022, the 23rd Meeting of the first board of directors and the 8th meeting of the first board of supervisors deliberated and approved the proposal on the use of some temporarily idle raised funds for cash management, and agreed that the company would use the temporarily idle raised funds up to RMB 3.064 billion for cash management on the premise of ensuring the implementation of the investment projects of the raised funds and the safety of the raised funds, It is used to purchase financial products with high investment security, good liquidity and principal guaranteed. The proposal shall be valid within 12 months from the date of deliberation and adoption by the board of directors. Within the above-mentioned limit and term, the company can recycle and roll. As of the date of this report, the company has actually used idle raised funds for cash management of 2075477800 yuan.

4、 Change the use of funds of raised investment projects

During the reporting period, there was no change in the raised investment projects of the company. 5、 Problems in the use and disclosure of raised funds

This year, there were no major problems in the use and disclosure of the company’s raised funds. 6、 Concluding opinions of the accounting firm on the assurance report issued by the company on the deposit and use of raised funds in 2021

Lixin Certified Public Accountants (special general partnership) believes that the special report on the deposit and use of raised funds in 2021 of Dongxin shares is in accordance with the regulatory guidelines for listed companies No. 2 – regulatory requirements for the management and use of raised funds of listed companies (revised in 2022) (CSRC announcement [2022] No. 15) of China Securities Regulatory Commission in all major aspects The preparation of the relevant provisions of the self regulatory guidelines for companies listed on the science and Innovation Board of Shanghai Stock Exchange No. 1 – standardized operation and the self regulatory guidelines for companies listed on the Shanghai Stock Exchange No. 1 – announcement format truthfully reflects the deposit and use of the raised funds of Dongxin in 2021. 7、 Concluding comments on the special verification report of the recommendation institution

After verification, the recommendation institution believes that, The deposit and use of the company’s raised funds in 2021 comply with the relevant provisions of the measures for the administration of securities issuance and listing recommendation business, the guidelines for the supervision of listed companies No. 2 – regulatory requirements for the management and use of raised funds by listed companies, the Listing Rules of Shanghai Stock Exchange Kechuang board, the guidelines for the self discipline supervision of listed companies on Shanghai Stock Exchange Kechuang board No. 1 – standardized operation, and the company’s raised funds management system, The raised funds were stored and used in a special account. As of December 31, 2021, Dongxin shares had not changed the purpose of the raised funds in a disguised manner and harmed the interests of shareholders, had not used the raised funds in violation of regulations, and had not used the raised funds in violation of relevant national laws and regulations on anti money laundering. The sponsor has no objection to the deposit and use of the raised funds of Dongxin in 2021. Attached table: 1. Comparison table of use of raised funds

Board of directors of Dongxin Semiconductor Co., Ltd. April 23, 2022

Prepared by: Dongxin Semiconductor Co., Ltd. 2021 unit: RMB 10000

The total amount of raised funds is 30635816. The total amount of raised funds invested in this year is 2941500

The total amount of raised funds for change of purpose is 0.00

The accumulated total amount of raised funds invested is 2941500

The proportion of total raised funds with changed purposes is 0.00

Investment of changed items as of the end of the period

As of the end of the period, whether the accumulated investment projects have reached the expected project feasibility goal of the current year, including the investment of some raised funds after adjustment, and the investment commitment of the current year as of the end of the period

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