RoboSense Technology Co., Ltd — Investor Presentation 2021

May 18, 2021

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

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ANNOUNCEMENT IN RESPECT OF THE PARTICIPATION OF THE LISTED COMPANY’S COLLECTIVE RESULTS BRIEFING OF CHINA NATIONAL BUILDING MATERIALS GROUP CO., LTD.*

Luoyang Glass Company Limited* (the “ Company ”) and all members of the board (the “ Board ”) of directors (the “ Directors ”) of the Company warrant the truthfulness, accuracy and completeness of the contents of this announcement, and accept several and joint responsibilities for any false information, misleading statements or material omissions in this announcement.

IMPORTANT NOTICE:

1. Content of the Briefing: The Listed Company’s Collective Results Briefing of China National Building Materials Group Co., Ltd.* (中國建材集團有限公司) (“ CNBMG ”)

2. Time of the Briefing: From 14:00 to 17:30 on Tuesday, 25 May 2021

3. Venue of the Briefing: Shanghai Stock Exchange Building, No. 528 South Pudong Road, Pudong New Area, Shanghai

4. Website for Live Webcast: the platform of SSE Roadshow Center (http:// roadshow.sseinfo.com) and WeChat official account in the name of “ 上證路演 中心 (SSE Roadshow Center)”.

5. Mode of the Briefing: live broadcast + on-site interaction + internet interaction by text

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1. Investors may send the issues which are of their concern to the Company’s email (lybl600876@163.com) before 17:00 on Monday, 24 May 2021, and the Company will answer the questions which are of common concern to the investors on the Briefing.

The Company has published its annual results announcement for the year ended 31 December 2020 on 30 March 2021, the 2020 Annual Report of the Company on 21 April 2021 and the 2021 First Quarterly Report of the Company on 29 April 2021. In order to implement the requirements of the Opinions of the State Council on Further Improving the Quality of Listed Companies (Guo Fa [2020] No. 14) (《國務 院關於進一步提高上市公司質量的意見》( 國發〔2020〕14 號 )), enhance the communication with investors, improve the image of CNBMG and promote the highquality development of the Company, the Company intends to participate in the listed company’s collective results briefing of CNBMG on 25 May 2021 in accordance with the unified arrangement of CNBMG, the ultimate controlling shareholder of the Company. The Company will communicate with investors regarding its annual results of 2020, the first quarterly results of 2021, operations and other matters, and answer the questions which are of common concern to the investors.

I. TIME AND METHODS OF THE BRIEFING

1. Time of the Briefing: From 14:00 to 17:30 on Tuesday, 25 May 2021

2. Mode of the Briefing: live broadcast + on-site interaction + internet interaction by text

3. Venue of the Briefing: Shanghai Stock Exchange Building, No. 528 South Pudong Road, Pudong New Area, Shanghai

4. Website for Live Webcast: the platform of SSE Roadshow Center (http:// roadshow.sseinfo.com) and WeChat official account in the name of “ 上證 路演中心 (SSE Roadshow Center)”.

II. PARTICIPANTS OF THE COMPANY

Mr. Ma Yan, the general manager and chief financial officer of the Company; Mr. Zhang Rong, the deputy general manager of the Company; and Ms. Wu Zhixin, the secretary to the Board.

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III. METHODS OF PARTICIPATION FOR INVESTORS

1. Investors may visit the website of SSE Roadshow Center (http:// roadshow.sseinfo.com) via the Internet from 14:00 to 17:30 on Tuesday, 25 May 2021 to participate in this briefing online.

2. Investors may send the issues which are of their concern to the Company’s email (lybl600876@163.com) before 17:00 on Monday, 24 May 2021, and the Company will answer the questions which are of common concern to the investors on the Briefing.

IV. CONTACT PERSON AND CONSULTATION METHOD

Office of the Board of the Company Telephone: 0379–6390 8588 Fax: 0379–6325 1984 Email: lybl600876@163.com

V. OTHER MATTERS

Investors may watch the video replay of the results briefing by visiting the website of SSE Roadshow Center (http://roadshow.sseinfo.com) after the Briefing.

By order of the Board Luoyang Glass Company Limited Zhang Chong* Chairman

Luoyang, the PRC 18 May 2021

As at the date of this announcement, the Board comprises five executive directors: Mr. Zhang Chong, Mr. Xie Jun, Mr. Ma Yan, Mr. Wang Guoqiang and Mr. Zhang Rong; two non-executive directors: Mr. Ren Hongcan and Mr. Chen Yong; and four independent non-executive directors: Mr. Jin Zhanping, Mr. Ye Shuhua, Mr. He Baofeng and Ms. Zhang Yajuan.

• For identification purposes only

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