Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) : verification report of the previously raised funds

Verification report of previously raised funds Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390)

Rongcheng zhuanzi [2022] No. 215z0060

Rongcheng Certified Public Accountants (special general partnership)

Beijing, China

catalogue

S / N content page 1 verification report on the use of previously raised funds 1-32 special report on the use of previously raised funds 4-7

Verification report on the use of the previously raised funds

Rongcheng zhuanzi [2022] No. 215z0060 Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) all shareholders:

We have reviewed the attached special report on the use of previously raised funds prepared by the board of directors of Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) (hereinafter referred to as ” Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) “) as of December 31, 2021.

1、 Restrictions on the users and purposes of the report

This assurance report is only for Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) the purpose of applying for non-public offering and shall not be used for any other purpose. We agree to submit this assurance report as a necessary document for Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) to apply for non-public offering together with other application materials.

2、 Responsibilities of the board of directors

It is the responsibility of the board of directors of Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) company to prepare the special report on the use of previously raised funds in accordance with the provisions on the report on the use of previously raised funds (Zheng Jian FA FA Zi [2007] No. 500) issued by the China Securities Regulatory Commission. This responsibility includes ensuring that its content is true, accurate and complete without false records, misleading statements or major omissions.

3、 Responsibilities of Certified Public Accountants

Our responsibility is to independently put forward assurance conclusions on the above report prepared by Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) board of directors.

4、 Job overview

We have carried out the assurance business in accordance with the provisions of other assurance business standards for Chinese certified public accountants No. 3101 – assurance business other than audit or review of historical financial information. The standard requires us to plan and implement assurance work to obtain reasonable assurance on whether the information of the assurance object is free from material misstatement. In the assurance process, we have implemented procedures that we consider necessary, including checking accounting records. We believe that our assurance work provides a reasonable basis for expressing opinions.

5、 Assurance conclusion

We believe that the attached Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) special report on the use of previously raised funds is prepared in accordance with the provisions on the report on the use of previously raised funds in all major aspects, and fairly reflects the use of previously raised funds by Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) as of December 31, 2021.

(there is no text on this page, which is the signature and seal page of Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) Rongcheng zhuanzi [2022] No. 215z0060 report.)

Rongcheng certified public accountants China Certified Public Accountants:

(special general partnership)

Beijing, China Certified Public Accountant:

February 8, 2022

Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390)

Special report on the use of previously raised funds

1、 Previous fund raising

(I) amount and availability of funds raised last time

With the approval of zjxk [2021] No. 793 document of China Securities Regulatory Commission, the company publicly issued 31604500 ordinary shares (A shares) to the public on April 12, 2021, with an issue price of 24.68 yuan per share and a total amount of 780 million yuan of funds to be raised. After deducting the issuance expenses of 14.9528 million yuan according to relevant regulations, The actual amount of funds raised was 765047200 yuan. The raised funds have been received in April 2021. The receipt of the above funds has been verified by the capital verification report (Rong Cheng Yan Zi [2021] No. 230z0069) of Rongcheng certified public accountants. The company has adopted special account storage management for the raised funds.

(II) deposit and management of the previously raised funds

In accordance with the company law of the people’s Republic of China, the securities law of the people’s Republic of China, the Listing Rules of the gem of Shenzhen Stock Exchange, the guidelines for the standardized operation of companies listed on the gem of Shenzhen Stock Exchange and other relevant provisions, and in accordance with the principles of standardization, safety, efficiency and transparency, the company has formulated the measures for the management of raised funds to The approval, use, management and supervision have made clear provisions to ensure the standardized use of raised funds in the system.

In April 2021, the company and the sponsor Tianfeng Securities Co.Ltd(601162) signed the supervision agreement on raised funds with China Merchants Bank Co.Ltd(600036) Suzhou Industrial Park sub branch, Agricultural Bank Of China Limited(601288) Kunshan Zhengyi sub branch and Shanghai Pudong Development Bank Co.Ltd(600000) Suzhou branch business department respectively, and opened a special account for raised funds (Account No.: 512904054810102) in China Merchants Bank Co.Ltd(600036) Suzhou Industrial Park sub branch Agricultural Bank Of China Limited(601288) Kunshan Zhengyi sub branch opens a special account for raised funds (Account No.: 105303010400022213) and Shanghai Pudong Development Bank Co.Ltd(600000) Suzhou branch business department opens a special account for raised funds (Account No.: 8901007880130005666). There is no significant difference between the company’s raised funds supervision agreement and the model raised funds supervision agreement of Shenzhen Stock Exchange, and there is no problem in the performance of the raised funds supervision agreement.

In April 2021, the company, its subsidiary Yibin Tianyi lithium Technology Innovation Co., Ltd. and the sponsor Tianfeng Securities Co.Ltd(601162) signed the raised funds supervision agreement with China Merchants Bank Co.Ltd(600036) Suzhou Branch and opened a special account for raised funds (Account No.: 512908463410905) in China Merchants Bank Co.Ltd(600036) Suzhou Branch. There is no significant difference between the raised funds supervision agreement and the model raised funds supervision agreement of Shenzhen Stock Exchange, and there is no problem in the performance of the raised funds supervision agreement. As of December 31, 2021, the deposit of the previously raised funds in the special account is as follows:

Bank name bank account balance

China Merchants Bank Co.Ltd(600036) Suzhou Industrial Park sub branch 512908463410905 2566.58

China Merchants Bank Co.Ltd(600036) Suzhou Industrial Park sub branch 512904054810102 0.56

Agricultural Bank Of China Limited(601288) Kunshan Zhengyi sub branch 1053030104002213 16.07

Shanghai Pudong Development Bank Co.Ltd(600000) Suzhou Branch Business Department 8901007880130005666 0.00

Total 2583.21

2、 Description of the actual use of the previously raised funds

(I) comparison table of the use of the previously raised funds

As of December 31, 2021, the company’s raised projects have used a total of 615902200 yuan of raised funds and temporarily supplemented 130 million yuan of working capital. After deducting the accumulated amount of used raised funds and supplemented working capital, the balance of raised funds is 19.1450 million yuan and the interest income of the special account for raised funds is 6.6871 million yuan, The total balance of the special account for raised funds on December 31, 2021 was 25.8321 million yuan.

See Annex 1 of this report for the comparison table of the use of the previously raised funds.

(II) description of changes in the actual investment projects of the previously raised funds

There is no change in the actual investment project of the previously raised funds.

(III) contents and reasons for the difference between the actual total investment of the project raised in the previous time and the commitment

The total investment of “battery grade lithium hydroxide phase II construction project” is planned to be 765047200 yuan. As of December 31, 2021, the project has invested 615902200 yuan of raised funds, 149145000 yuan less than the promised investment. The project is basically used according to the original plan. The difference in the promised investment is mainly because the project has not reached the expected usable state, and will continue to be invested in the future.

(IV) description of the external transfer or replacement of the investment project of the previously raised funds

Before the raised funds are in place, as of April 12, 2021, the company has invested 61.9663 million yuan in the raised funds projects with self raised funds. On April 20, 2021, the company held the 12th meeting of the 5th board of directors and the proposal on funds and paid issuance expenses. After the independent directors of the company issued independent opinions and Tianfeng Securities Co.Ltd(601162) issued verification opinions, the company implemented the resolution of the board of directors and replaced the self raised funds invested in advance with raised funds of 61.9663 million yuan.

(V) remaining raised funds, use plan and arrangement of remaining funds

As of December 31, 2021, the company’s raised projects have used a total of 615902200 yuan of raised funds and temporarily supplemented 130 million yuan of working capital. After deducting the accumulated amount of used raised funds and supplemented working capital, the balance of raised funds is 19.1450 million yuan and the interest income of the special account for raised funds is 6.6871 million yuan, The total balance of the special account for raised funds on December 31, 2021 is 25.8321 million yuan, and the remaining funds will continue to be used for the construction of raised investment projects.

3、 Description of the benefits achieved by the investment project of the previously raised funds

(I) benefits achieved by the investment projects with the previously raised funds

“Battery grade lithium hydroxide phase II construction project” will be ready for use in March 2022. The project has not yet achieved benefits.

4、 Description of the comparison between the actual use of the previously raised funds and the publicly disclosed information

As of December 31, 2021, by comparing the actual use of the raised funds with the relevant contents disclosed in the company’s periodic reports and other information disclosure documents item by item, it is confirmed that the actual use of the raised funds in the previous time is consistent with the publicly disclosed information.

5、 Approval and issuance of report

This report was approved by the board of directors of the company on February 8, 2022.

Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) board of directors February 8, 2022

Attachment 1:

Comparison table of previous use of raised funds

As of December 31, 2021

Prepared by: Suzhou Ta&A Ultra Clean Technology Co.Ltd(300390) amount unit: RMB 10000

Total raised funds: 76504.72 total used raised funds: 61590.22

Total amount of raised funds used in each year:

Total amount of raised funds with changed purposes:

2021: 61590.22

Proportion of total raised funds with changed purposes:

The total investment amount of the raised funds of the investment project has reached

Actual investment reservation can promise investment items. Actual investment items are raised before and after being raised before and after being raised. Actual investment amount and use status of raising No. item promise investment jinpromise investment amount actual investment amount promise investment jinpromise investment amount after collection commitment date (or cut-off date)

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