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.

Beijing Urban Construction Design & Development Group Co., Limited 北京城建設計發展集團股份有限公司 (A joint stock company incorporated in the People’s Republic of with limited liability) (Stock Code: 1599)

VOLUNTARY ANNOUNCEMENT BID WINNING FOR MAJOR PROJECTS IN THE FIRST QUARTER OF 2020

This announcement is published by Urban Construction Design & Development Group Co., Limited (the “Company”) as a voluntary announcement.

For the three months ended 31 March 2020, the Company won the bid for major projects in the survey, design and consultancy segment with a total amount of approximately RMB1,006.4 million.

Particulars of the above major projects are set out as follows:

Winning bid amount of the No. Project name Company Note (RMB0’000)

1 Preliminary Design Scheme Project for 74.8 Intelligent Rail Transit System in Zhuzhou of Zhuzhou Transportation Bureau (株洲市交通 運輸局株洲市智能軌道交通系統初步設計方 案項目) 2 Feasibility Study Report Preparation Project 2,393 for Shijiazhuang Urban Rail Transit Line 4 and Line 6 Phase I Project (石家莊市城市軌 道交通4號線和6號線一期工程可行性研究報 告編製項目)

1 Winning bid amount of the No. Project name Company Note (RMB0’000)

3 General Contracting for the Design of 97,641.19 Won the bid together with Chongqing Rail Transit Line 15 and Line 4 consortium comprising West Extension Section (重慶軌道交通交通15 China Railway Siyuan 號線、4號線西延伸段設計總承包) Survey and Design Group Co., Ltd., China Railway Liuyuan Group Co., Ltd. and China Railway Major Bridge Reconnaissance & Design Institute Co., Ltd. 4 Investigation on Widening and Reconstruction 382 Project of Beijing- Expressway (East to East 6th Ring Road) (京哈高 速公路（東五環~東六環）加寬改造工程勘察) 5 Third-party Monitoring of the Municipal 147.431 Roads (Apple Garden South Road, Badachu Road and Xihuangcun Road) through Metro Line 6 in the reconstruction of shantytowns in Xihuang Village, Shijingshan District (石景山 區西黃村棚戶區改造配套市政道路（蘋果園 南路、八大處路、西黃村路）穿越地鐵6號線 工程第三方監測)

Total 100,638.421

By order of the Board Beijing Urban Construction Design & Development Group Co., Limited Pei Hongwei Chairman

Beijing, 7 April 2020

As at the date of this announcement, the executive directors of the Company are Wang Hanjun and Li Guoqing; the non-executive directors of the Company are Pei Hongwei, Tang Shuchang, Wu Donghui, Guan Jifa, Ren Yuhang, Su Bin, Yu Xiaojun and Ren Chong; and the independent non-executive directors of the Company are Wang Dexing, Ma Xufei, Sun Maozhu, Liang Qinghuai and Qin Guisheng.

2