Beijing Const Instruments Technology Inc(300445) : Beijing Const Instruments Technology Inc(300445) announcement on the proposed reappointment of the audit institution in 2022

Securities code: Beijing Const Instruments Technology Inc(300445) securities abbreviation: Beijing Const Instruments Technology Inc(300445) Announcement No.: 2022011 Beijing Const Instruments Technology Inc(300445)

Announcement on the proposed reappointment of audit institutions in 2022

The company and all members of the board of directors guarantee that the information disclosed is true, accurate and complete without false records, misleading statements or major omissions. Special tips:

1. The audit opinion of the company’s 2021 annual audit report is a standard unqualified opinion;

2. This appointment does not involve the change of accounting firm;

3. The board of directors, audit committee and independent directors of the company have no objection to the proposed renewal of the accounting firm.

Beijing Const Instruments Technology Inc(300445) (hereinafter referred to as “the company”, “the company” or ” Beijing Const Instruments Technology Inc(300445) “) held the 13th meeting of the 5th board of directors and the 13th meeting of the 5th board of supervisors on March 23, 2022, deliberated and approved the proposal on the company’s renewal of the audit institution, and agreed to renew the appointment of YONGTUO Certified Public Accountants (special general partnership) (hereinafter referred to as “YONGTUO”) as the audit institution of the company in 2022. The specific information is announced as follows: I. description of the matters to be employed by the accounting firm

YONGTUO Certified Public Accountants (special general partnership) is qualified to engage in Securities and futures related businesses, and the signing certified public accountants and project leaders have corresponding professional competence. In the audit work in 2021, YONGTUO followed the principles of independence, objectivity, impartiality and fairness, successfully completed the company’s financial and internal control audit in 2021, and showed good professional ethics and professional quality. In order to maintain the continuity and stability of the audit work, the company plans to continue to employ YONGTUO Certified Public Accountants (special general partnership) as the company’s audit institution in 2022 for one year. In 2021, the annual audit remuneration given by the company to YONGTUO Certified Public Accountants (special general partnership) was 360000 yuan. The board of directors of the company requests the general meeting of shareholders to authorize the management of the company to negotiate with YONGTUO accounting firm (special general partnership) to determine the basic information of the accounting firm to be renewed in 2022 according to the audit business volume of the company in 2021 (I) institutional information

1. Basic information

1) Name of accounting firm: YONGTUO accounting firm (special general partnership)

2) Date of establishment: December 20, 2013

3) Organizational form: special general partnership

4) Registered address: No. 2, building 13, Guandong street, Chaoyang District, Beijing

5) Chief partner: LV Jiang

6) Number of partners at the end of last year (the end of 2021): 104

7) Number of certified public accountants at the end of last year (the end of 2021): 367

8) Number of certified public accountants who signed the audit report of securities service business at the end of last year: 146

9) Total revenue of the latest year (2021) (audited): 375.68 million yuan

10) Audit income in the latest year (2021) (audited): 319.09 million yuan

11) Securities business income in the latest year (2021) (audited): 147.56 million yuan

12) Number of audit clients of Listed Companies in the previous year (end of 2021): 33

13) Number of audit clients of Listed Companies in the previous year (end of 2021): 173

14) Main industries of audit clients of Listed Companies in the previous year (at the end of 2021): chemical raw materials and chemical products manufacturing; Pharmaceutical manufacturing, rubber and plastic products; General equipment manufacturing; Special equipment manufacturing

15) Audit fees of Listed Companies in the previous year: 49.85 million yuan

16) Audit fees of Listed Companies in the previous year: 29.06 million yuan

17) The number of audit clients of the company’s Listed Companies in the same industry last year: 1 listed company and 4 listed companies

2. Investor protection ability

1) Amount of occupational risk fund at the end of last year: 30.08 million yuan

2) Cumulative compensation limit of occupational insurance: 30 million yuan

Be able to bear the civil compensation liability caused by audit failure, and the withdrawal of occupational risk fund and the purchase of pledge insurance comply with relevant regulations.

In recent three years, YONGTUO has not undertaken civil liability in civil litigation related to professional behavior. 3. Integrity record

YONGTUO Certified Public Accountants (special general partnership) has received 0 criminal punishment, 1 administrative punishment, 8 supervision and management measures, 0 self-discipline supervision measures and 0 disciplinary sanctions in recent three years

In recent three years, 17 employees have been subject to criminal punishment 0 times, administrative punishment 4 times, supervision and management measures 17 times and self-discipline supervision measures 0 times. (2) Project information 1 essential information

Project partner: Tang Lin, who has been engaged in audit business in YONGTUO Certified Public Accountants (special general partnership) since November 2000, has successively provided annual audit and assurance work for Beijing Const Instruments Technology Inc(300445) , Beijing voice Electronics Co., Ltd., and has corresponding professional competence.

1) Certified public accountant signing the project: Geng Jie, who became a Chinese certified public accountant in 2017, began to engage in the audit business of Listed Companies in 2012, began to practice in YONGTUO Certified Public Accountants (special general partnership) in 2017, and began to provide audit services for the company in 2012. Signed or reviewed audit reports of Sobute New Materials Co.Ltd(603916) , Beijing Const Instruments Technology Inc(300445) and other listed companies in recent three years.

Reviewer of project quality control: Ma Xiangjun, now serves as YONGTUO quality control partner, general auditor, Chinese certified public accountant and senior auditor. He became a certified public accountant on December 23, 1998 and began to engage in the audit business of Listed Companies in 2000. He joined YONGTUO on October 1, 2000 and provided audit services for it. Engaged in the audit industry of certified public accountants for 22 years, with experience in securities service business. There are 16 listed companies reviewed by YONGTUO in recent three years, mainly Kangxin New Materials Co.Ltd(600076) , Nanjing Huamai Technology Co.Ltd(603042) , Fuan Pharmaceutical (Group) Co.Ltd(300194) (Group) Co., Ltd. 2. Integrity record

In the past three years (the last three complete natural years and the current year), the project partner, the signing certified public accountant and the project quality control reviewer have not been subject to criminal punishment due to their professional behavior, administrative punishment and supervision measures by the CSRC, its dispatched offices and industry competent departments, and self-discipline supervision measures and disciplinary measures by self-discipline organizations such as securities trading places and industry associations. 3. Independence

There is no violation of the independence requirements of the code of professional ethics for Chinese certified public accountants.

4. Audit fees

Pricing principle of audit fees: the final audit fees shall be determined according to the company’s business scale, industry, complexity of accounting treatment and other factors, as well as the auditors required for the audit of the company’s annual report, the workload invested and the charging standard of the firm.

The audit fee of the current annual report was 360000 yuan, a slight increase compared with the previous year.

3、 Procedures to be performed by the accounting firm to be reappointed 1 Performance of audit committee

The audit committee of the board of directors of the company has fully understood the practice of YONGTUO Certified Public Accountants (special general partnership). After consulting the relevant qualification certificates, relevant information and integrity records of YONGTUO Certified Public Accountants (special general partnership), it is agreed that YONGTUO Certified Public Accountants (special general partnership) can adhere to the principle of independent audit and objectively, fairly and fairly reflect the financial situation of the company Operating results, earnestly perform the duties of the audit institution, and recognize its independence, integrity, professional competence and investor protection ability. The audit committee formed a written opinion on the renewal of the accounting firm and agreed to renew the appointment of YONGTUO accounting firm (special general partnership) as the audit institution of the company in 2022 and submit it to the board of directors for deliberation. 2. Prior approval and independent opinions of independent directors

After verification, YONGTUO Certified Public Accountants (special general partnership) has the qualification of securities related business audit, and has rich experience and professional quality in the audit of listed companies. During his tenure as the company’s audit institution in 2021, YONGTUO certified public accountants strictly followed the laws, regulations and relevant policies related to financial audit, such as the independent audit standards for Chinese certified public accountants, was diligent and conscientious, and followed the professional standards of independence, objectivity, impartiality and integrity, We have fairly and reasonably expressed our audit opinions, have the ability to protect investors, and the audit report issued can fairly and truly reflect the company’s financial status and operating results. Therefore, we agree to continue to appoint YONGTUO Certified Public Accountants (special general partnership) as the company’s audit institution in 2022. 3. Opinions of the board of directors

YONGTUO Certified Public Accountants (special general partnership) is the audit institution of the company in 2021. The firm adheres to the principle of independent audit in the process of practice, and can issue various professional reports for the company on time. The content of the report is objective, the work quality of the institution and the market situation, and determine the annual audit fee. 4. Opinions of the board of supervisors

YONGTUO Certified Public Accountants (special general partnership) is qualified for securities related business, has the experience and ability to provide audit services for listed companies, can provide fair and fair audit services for the company, and can meet the audit requirements of the company in 2021. It is agreed to continue to employ YONGTUO Certified Public Accountants (special general partnership) as the company’s audit institution in 2022 to be responsible for the company’s audit in 2022. 5. Effective date

The appointment of an accounting firm needs to be submitted to the 2021 annual general meeting of shareholders of the company for deliberation, and will take effect from the date of deliberation and approval by the general meeting of shareholders of the company. 4、 Documents for future reference 1 Beijing Const Instruments Technology Inc(300445) the resolution of the 13th meeting of the 5th board of directors; 2. Beijing Const Instruments Technology Inc(300445) the resolution of the 13th meeting of the 5th board of supervisors; 3. Beijing Const Instruments Technology Inc(300445) the resolution of the first meeting of the audit committee of the Fifth Board of directors in 2022; 4. Prior approval letter of Beijing Const Instruments Technology Inc(300445) independent directors on relevant matters; 5. Independent opinions of Beijing Const Instruments Technology Inc(300445) independent directors on relevant matters of the 13th meeting of the 5th board of directors; 6. Explanation on the basic information of the renewed accounting firm; 7. Other documents required by SZSE.

It is hereby announced.

Beijing Const Instruments Technology Inc(300445) board of directors

March 24, 2022

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