1. Letter on supervision of China Dive Company Limited(300526) gem regulatory letter [2022] No. 30 China Dive Company Limited(300526) board of directors: according to the facts found out in the decision on administrative punishment ([2021] No. 13) issued by Guangdong regulatory bureau of China Securities Regulatory Commission, in September 2016, Zhang Shun, the then chairman of your company, arranged others to register and establish Huizhou Yayan Hotel Management Co., Ltd. (hereinafter referred to as “Huizhou Yayan”); In November 2017, Zhang Shun provided acquisition funds in the name of loan and arranged others to acquire 100% equity of Shenzhen Zhongtian diving equipment Co., Ltd. (hereinafter referred to as “Zhongtian equipment”). Zhang Shun made arrangements for the daily operation and financial management of Huizhou Yayan and Zhongtian equipment respectively. Huizhou Yayan and Zhongtian equipment are the affiliated legal persons of your company. In 2019, your company had a total of 371003 million yuan of operating related party transactions with Huizhou Yayan and Zhongtian equipment, accounting for 6.78% of the company’s net assets at the end of 2018. According to the announcement on supplementary confirmation of related party transactions and expected related party transactions in 2020 (Updated) disclosed by your company on August 11, 2020, from the beginning of 2020 to the disclosure date of the announcement, your company has had a total of 204861 million yuan of operating related party transactions with Huizhou Yayan and Zhongtian equipment, accounting for 3.58% of the company’s net assets at the end of 2019. Your company failed to timely fulfill the review procedures and information disclosure obligations on the above related party transactions, and violated the provisions of articles 1.4, 7.2.7 and 7.2.8 of the GEM Listing Rules (revised in June 2020). The board of directors of your company is requested to pay full attention to the above problems, draw lessons and rectify them in time to prevent the recurrence of the above problems. Our department reminds you that listed companies must conscientiously and timely fulfill the obligation of information disclosure in accordance with national laws and regulations and the Shenzhen Stock Exchange GEM Listing Rules. All members of the board of directors of a listed company must ensure that the information disclosed is true, accurate and complete without false records, misleading statements or major omissions, and bear individual and joint liabilities for their guarantee. This is to inform you. Gem company management department March 13, 2022