Universal Scientific Industrial(Shanghai)Co.Ltd(601231) : annual internal control evaluation report of Universal Scientific Industrial(Shanghai)Co.Ltd(601231) 2021

Convertible bond Code: 113045 convertible bond abbreviation: huanxu convertible bond

Universal Scientific Industrial(Shanghai)Co.Ltd(601231)

Internal control evaluation report in 2021

Universal Scientific Industrial(Shanghai)Co.Ltd(601231) all shareholders:

According to the provisions of the basic norms of enterprise internal control and its supporting guidelines and other internal control supervision requirements (hereinafter referred to as the enterprise internal control standard system), combined with the internal control system and evaluation methods of the company (hereinafter referred to as the “company”), on the basis of daily and special supervision of internal control, We evaluated the effectiveness of the company’s internal control on December 31, 2021 (the benchmark date of the internal control evaluation report). I Important statement

It is the responsibility of the board of directors of the company to establish, improve and effectively implement internal control, evaluate its effectiveness and truthfully disclose the internal control evaluation report in accordance with the provisions of the enterprise’s internal control standard system. The board of supervisors shall supervise the establishment and implementation of internal control by the board of directors. The management is responsible for organizing and leading the daily operation of the enterprise’s internal control. The board of directors, the board of supervisors and the directors, supervisors and senior managers of the company guarantee that there are no false records, misleading statements or major omissions in the contents of this report, and bear individual and joint legal liabilities for the authenticity, accuracy and completeness of the contents of the report.

The objective of the company’s internal control is to reasonably ensure the legal compliance of operation and management, asset safety, authenticity and integrity of financial reports and relevant information, improve operation efficiency and effect, and promote the realization of development strategy. Due to the inherent limitations of internal control, it can only provide reasonable assurance for the realization of the above objectives. In addition, as changes in circumstances may lead to inappropriate internal control or reduced compliance with control policies and procedures, there is a certain risk to speculate the effectiveness of internal control in the future according to the internal control evaluation results. II Internal control evaluation conclusion 1 On the benchmark date of the internal control evaluation report, does the company have any major defects in the internal control of financial reporting

□ yes √ no

2. Evaluation conclusion of internal control over financial reporting

√ valid □ invalid

According to the identification of major defects in the company’s internal control over financial reporting, there are no major defects in the internal control over financial reporting on the benchmark date of the internal control evaluation report. The board of Directors believes that the company has maintained effective internal control over financial reporting in all major aspects in accordance with the requirements of the enterprise’s internal control standard system and relevant regulations. 3. Whether major defects in internal control over non-financial reporting are found

□ yes √ no

According to the identification of major defects in the company’s internal control over non-financial reports, the company found no major defects in the company’s internal control over non-financial reports on the benchmark date of the internal control evaluation report.

4. Factors affecting the evaluation conclusion of internal control effectiveness from the benchmark date of internal control evaluation report to the date of issuance of internal control evaluation report □ applicable √ not applicable

There are no factors affecting the evaluation conclusion of the effectiveness of internal control from the base date of the internal control evaluation report to the date of issuance of the internal control evaluation report. 5. Whether the internal control audit opinion is consistent with the company’s evaluation conclusion on the effectiveness of internal control over financial reporting

√ yes □ No 6 Whether the disclosure of major defects in internal control of non-financial reports in the internal control audit report is consistent with the disclosure of the company’s internal control evaluation report √ yes □ no III Internal control evaluation (I) Scope of internal control evaluation

According to the risk oriented principle, the company determines the main units, businesses and matters included in the evaluation scope and high-risk areas. 1. The main units included in the scope of evaluation include Universal Scientific Industrial(Shanghai)Co.Ltd(601231) , Huansheng Electronics (Shenzhen) Co., Ltd., huanhong Technology Co., Ltd., Huanlong Electric Co., Ltd., huanhong Electronics (Kunshan) Co., Ltd., Huanwei Electronics (Shanghai) Co., Ltd. and Feixu Electronics (Suzhou) Co., Ltd. the total assets of the units included in the scope of evaluation account for 87.06% of the total assets in the consolidated financial statements of the company, The total operating revenue accounts for 87.11% of the total operating revenue in the company’s consolidated financial statements. 2. Proportion of units included in the scope of evaluation:

Proportion of indicators (%)

The ratio of the total assets of the units included in the evaluation scope to the total assets of the company’s consolidated financial statements is 87.06

The total operating income of the units included in the evaluation scope accounted for 87.11% of the total operating income in the company’s consolidated financial statements, accounting for 3.3% The main operations and matters included in the scope of evaluation include:

(1) Enterprise level self-evaluation; (2) Job level self-evaluation 4 The high-risk areas of focus mainly include:

Procurement and payment cycle, sales and collection cycle, production cycle, payroll cycle, financing cycle, investment cycle, financial reporting cycle, real estate / plant and equipment cycle, R & D cycle and information cycle. 5. The above units, businesses and matters included in the evaluation scope and high-risk areas cover the main aspects of the company’s operation and management. Is there any major omission □ yes √ No 6 Is there a statutory exemption

□ yes √ no

7. Other explanatory matters

None (II) Basis of internal control evaluation and identification standard of internal control defects

The company organizes and carries out internal control evaluation according to the enterprise internal control standard system and internal control defect identification standards. 1. Whether the specific identification standard of internal control defects is adjusted with that of previous years

□ yes √ no

The board of directors of the company distinguished the internal control of financial report from the internal control of non-financial report according to the identification requirements for major defects, important defects and general defects of the enterprise internal control standard system, combined with the factors such as the company’s size, industry characteristics, risk preference and risk tolerance, and studied and determined the specific identification standards of internal control defects applicable to the company, which are consistent with the previous years. 2. Identification criteria for defects in internal control over financial reporting

The quantitative criteria for the evaluation of internal control defects in financial reporting determined by the company are as follows:

Index name major defect quantitative standard important defect quantitative standard general defect quantitative standard

Total after tax profit misstatement amount ≥ 5% of net profit ≤ misstatement amount 10% of net profit misstatement amount 10% 5% of potential misstatement amount of net profit

Potential misstatement amount of total assets ≥ 2% of total assets ≤ misstatement amount misstatement amount of total assets 5% 5% 2% of misstatement amount of total assets

Potential misstatement amount of operating income ≥ 2% of operating income ≤ misstatement amount misstatement amount of operating income 5% 5% 2% of misstatement amount of operating income

Potential misstatement amount of owner’s equity ≥ 2% of owner’s equity ≤ misstatement amount owner’s equity misstatement amount 2% of 5% of owner’s equity in the misstatement amount

Note: the financial index values referred to in the quantitative standard are the audited consolidated statement data of the company in the previous year.

The qualitative criteria for the evaluation of internal control defects in financial reporting determined by the company are as follows:

Qualitative standard of defect nature

Major defects, fraud of directors, supervisors and senior managers; Make misstatement correction for major errors in the announced financial report; There is a material misstatement in the current financial report, but the internal control fails to find the misstatement in the operation process; The supervision of the audit committee and the internal audit department on the internal control of financial reporting is invalid.

Significant defects: failure to select and apply accounting policies in accordance with GAAP; Failure to establish anti fraud procedures and control measures; No corresponding control mechanism has been established or implemented for the accounting treatment of unconventional or special transactions, and there is no corresponding compensatory control; There are one or more defects in the control of the financial reporting process at the end of the period, and it can not reasonably ensure that the prepared financial statements achieve the goal of authenticity and accuracy.

General defects general defects refer to other control defects other than the above major defects and important defects.

Note: none 3 Identification standard of internal control defects in non-financial reporting

The quantitative criteria for the evaluation of internal control defects in non-financial reporting determined by the company are as follows:

Index name major defect quantitative standard important defect quantitative standard general defect quantitative standard

Amount of direct property loss amount of loss ≥ 5% of net profit ≤ amount of loss amount of loss of net profit amount of loss of net profit

10% 10% 5%

Note: the financial index values referred to in the quantitative standard are the audited consolidated statement data of the company in the previous year.

The qualitative criteria for the evaluation of internal control defects in non-financial reporting determined by the company are as follows:

Qualitative standard of defect nature

Major defects lead to major mistakes in the company’s decision-making procedures; Negative news frequently appears in the media, involving a wide range, and the negative impact has not been eliminated; The company’s important business lacks system control or the system fails; Major defects in the company’s internal control have not been rectified.

General mistakes caused by important defects in the company’s decision-making procedures; Negative news in the media, affecting local areas; There are defects in the company’s important business system or system; Important defects in the company’s internal control have not been rectified.

General defects: the efficiency of the company’s decision-making process is not high; Negative news appears in the media, but the impact is small; Defects in the company’s general business system or system; General defects of the company have not been rectified; The company has other defects.

Note: none (III) Identification and rectification of internal control defects 1 Identification and rectification of internal control defects in financial reporting 1.1 Major defects

Whether the company has major defects in internal control over financial reporting during the reporting period □ yes √ no 1.2 Important defects

Whether the company has significant defects in internal control over financial reporting during the reporting period □ yes √ no 1.3 General defect

There may be general defects in the daily operation of the internal control process. Since the company’s internal control has established a double-layer supervision mechanism of self-evaluation and internal audit, once defects are found, a rectification plan shall be formulated immediately, and the rectification progress shall be tracked to make the risk controllable. 1.4. After the above rectification, on the benchmark date of the internal control evaluation report, does the company have any major defects in the internal control of financial reporting that have not been rectified □ yes √ no 1.5 After the above rectification, on the benchmark date of the internal control evaluation report, whether the company has any important defects in the internal control of financial reporting that have not been rectified □ yes √ No 2 Identification and rectification of internal control defects in non-financial reporting 2.1 Major defects

Whether the company found any major defects in internal control over non-financial reporting during the reporting period □ yes √ no 2.2 Important defects

Whether the company found any significant defects in internal control over non-financial reporting during the reporting period

2.3. General defect

There may be general defects in the daily operation of the internal control process. Since the company’s internal control has established a double-layer supervision mechanism of self-evaluation and internal audit, once defects are found, a rectification plan shall be formulated immediately, and the rectification progress shall be tracked to make the risk controllable. 2.4. After the above rectification, on the benchmark date of the internal control evaluation report, does the company find any major defects in the non-financial reporting internal control that have not been rectified □ yes √ no 2.5 After the above rectification, on the benchmark date of the internal control evaluation report, whether the company finds any important defects in non-financial reporting internal control that have not been rectified □ yes √ no IV Description of other major matters related to internal control 1 Rectification of internal control defects in the previous year □ applicable √ not applicable 2 Operation of internal control in this year and improvement direction in the next year

□ applicable √ not applicable 3 Description of other major events

□ applicable √ not applicable

Chairman (authorized by the board of directors): Chen Changyi Universal Scientific Industrial(Shanghai)Co.Ltd(601231) March 25, 2022

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