1. Securities code: Guangdong Dazhi Environmental Protection Technology Incorporated Company(300530) securities abbreviation: ST Dazhi Announcement No.: 2022038 announcement of Hunan lingpaidazhi Technology Co., Ltd. on the proposed renewal of the accounting firm. Hunan lingpaidazhi Technology Co., Ltd. (hereinafter referred to as “the company”) held the fourth meeting of the Fifth Board of directors and the third meeting of the Fifth Board of supervisors on March 30, 2022, and deliberated and adopted the proposal on the renewal of the company’s audit institution in 2022, The proposal still needs to be submitted to the general meeting of shareholders of the company for deliberation. The specific information is hereby announced as follows: I. description of the matters to be employed as an accounting firm. Tianjian accounting firm (special general partnership) is a large national professional accounting and audit intermediary service organization with the highest comprehensive strength in China, and has rich experience and professional quality in the audit of listed companies. During his tenure as the company’s audit institution, he followed the relevant provisions of the independent auditing standards for Chinese certified public accountants, performed his duties diligently, adhered to the independent, objective and fair auditing standards, and expressed his audit opinions fairly and reasonably. As proposed by the audit committee of the board of directors of the company, the company plans to continue to employ Tianjian Certified Public Accountants (special general partnership) as the audit institution of the company in 2022, and request the general meeting of shareholders to authorize the management of the company to negotiate with the audit institution to determine the audit fee according to the actual business and market conditions of the company in 2022. 2、 Basic information of the accounting firm to be employed (I) institutional information 1 Basic information firm name: Tianjian Certified Public Accountants (special general partnership) Date of establishment July 18, 2011 registered address of special general partnership Hu Shaoxian, chief partner, 6th floor, No. 128 Xixi Road, Xihu District, Hangzhou, Zhejiang Province number of partners at the end of last year 210 number of practitioners at the end of last year 1901 number of Certified Public Accountants 749 certified public accountants who signed the audit report of securities service business total business income of RMB 3.06 billion in 2020 audit business income of RMB 2.72 billion in securities business income RMB 1.88 billion was invested in the audit of listed companies (including a and B shares) in 2020. There were 529 customers and the total audit fees were RMB 570 million, involving major industries, manufacturing, information transmission, software and information technology services. The company and all members of the board of directors guaranteed that the content of information disclosure was true, accurate and complete without false records, misleading statements or major omissions. 2 industry, wholesale and retail industry, real estate industry, construction industry, power, heat, gas and water production and supply industry, finance industry, transportation, storage and postal industry, culture, sports and entertainment industry, leasing and business services industry, water conservancy, environment and public facilities management industry, scientific research and technical services industry, agriculture, forestry, animal husbandry, fishery, mining industry, accommodation and catering industry, education, Comprehensive audit: the number of audit clients of Listed Companies in the same industry of the company is 12 At the end of last year, Tianjian Certified Public Accountants (special general partnership) had accrued more than 100 million yuan of occupational risk fund, and the cumulative compensation limit of occupational insurance purchased exceeded 100 million yuan. The occupational risk fund mentioned that the purchase of occupational insurance met the relevant provisions of the Ministry of Finance on the measures for the administration of occupational risk fund of certified public accountants and other documents. In recent three years, Tianjian Certified Public Accountants (special general partnership) is not required to bear civil liability in the civil litigation related to practice. 3. Integrity record Tianjian Certified Public Accountants (special general partnership) has been subject to supervision and management measures 14 times in recent three years due to its professional behavior, and has not been subject to criminal punishment, administrative punishment, self-discipline supervision measures and disciplinary sanctions. 36 employees have been subject to supervision and management measures 20 times in recent three years due to their practice behavior, and have not been subject to criminal punishment, administrative punishment and self-discipline supervision measures. (II) project information 1 Name of the member of the basic information project team when to become a certified public accountant when to start engaging in the audit of listed companies when to practice in the exchange when to provide audit services for the company in recent three years Peng Zongxian, partner of the project, signed or reviewed the audit reports of Listed Companies in 2010, 2008, 2012 and 2020, Reviewed the audit reports of 4 listed companies, signed by certified public accountant Peng Zongxian in 2010, 2008, 2012 and 2020, signed the audit reports of 5 listed companies, reviewed the audit reports of 43 listed companies, Chen Jiancheng in 2013, signed the audit reports of 3 listed companies in 2010, 2012 and 2018, and the quality control reviewer is to be determined 2 In the past three years, the project partners, signed certified public accountants and project quality control reviewers have 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 sanctions by self-discipline organizations such as stock exchanges and Industry associations. The specific situation is as follows: Chen Jiancheng has been subject to supervision and management measures twice for his practice behavior, and has not been subject to criminal punishment, administrative punishment and self-discipline supervision measures. 3. Independence Tianjian Certified Public Accountants (special general partnership), project partners, signed certified public accountants and project quality control reviewers have no circumstances that may affect their independence. 3、 The audit committee of the board of directors of the company has carefully examined the professional qualification, professional ability and independence of Tianjian Certified Public Accountants (special general partnership), and believes that Tianjian Certified Public Accountants (special general partnership) is a large national professional accounting and audit intermediary service organization with the highest comprehensive strength in China, Have rich experience and professional quality in auditing of listed companies. Agree to continue to employ Tianjian Certified Public Accountants (special general partnership) as the company’s audit institution in 2022, and agree to submit the proposal to the board of directors for deliberation. (II) prior approval and independent opinions of independent directors. Independent directors have expressed prior approval opinions on the renewal of employment. The independent directors believe that Tianjian Certified Public Accountants (special general partnership) has the qualification of securities and futures 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, he followed the relevant provisions of the independent auditing standards for Chinese certified public accountants, performed his duties diligently, adhered to the independent, objective and fair auditing standards, and expressed his audit opinions fairly and reasonably. We agree to submit this proposal to the board of directors of the company for deliberation. The independent directors expressed their independent opinions on the renewal. The independent directors believe that Tianjian Certified Public Accountants (special general partnership) has strictly followed the requirements of relevant laws and regulations, performed its duties diligently, completed the annual audit work in accordance with the independent, objective and fair practice standards, and the audit report issued by Tianjian Certified Public Accountants (special general partnership) objectively and fairly reflected the financial status and operating results of the company. Agree to continue to employ Tianjian Certified Public Accountants (special general partnership) as the company’s audit institution in 2022, and agree to submit the matter to the general meeting of shareholders for deliberation. (III) examination and approval and procedures to be performed. The company held the fourth meeting of the Fifth Board of directors and the third meeting of the Fifth Board of supervisors on March 30, 2022, deliberated and adopted the proposal on the renewal of the company’s audit institution in 2022. The renewal matters need to be submitted to the general meeting of shareholders of the company for deliberation and effective from the date of deliberation and approval by the general meeting of shareholders of the company. 4、 Documents for future reference (I) resolutions of the fourth meeting of the Fifth Board of directors; (II) resolutions of the third meeting of the Fifth Board of supervisors; (III) resolutions of the first meeting of the audit committee of the Fifth Board of directors; (IV) prior approval opinions of independent directors on matters related to the fourth meeting of the Fifth Board of directors of the company; (V) independent opinions of independent directors on matters related to the fourth meeting of the Fifth Board of directors of the company; (VI) the business license of the accounting firm to be employed, the information and contact information of the main person in charge and the contact person of the regulatory business, and the ID card, license and contact information of the certified public accountant to be signed for the specific audit business. It is hereby announced. Board of directors of Hunan lingpaidazhi Technology Co., Ltd. March 31, 2022