China National Building Material : ANNOUNCEMENT - PRINCIPAL ACCOUNTING DATA AND FINANCIAL INDICATORS OF SINOMA SCIENCE & TECHNOLOGY FOR THE YEAR ENDED 31 DECEMBER 2019

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.

(a joint stock limited company incorporated in the People's Republic of China with limited liability of its members)

ANNOUNCEMENT

PRINCIPAL ACCOUNTING DATA AND FINANCIAL INDICATORS

OF SINOMA SCIENCE & TECHNOLOGY

FOR THE YEAR ENDED 31 DECEMBER 2019

The board of directors of China National Building Material Company Limited* (the "Company") would like to draw the attention of its shareholders and the public investors to the following principal accounting data and financial indicators of Sinoma Science & Technology Co., Ltd.* (the "Sinoma Science & Technology") for the year ended 31 December 2019.

Sinoma Science & Technology is a subsidiary of the Company and its A shares are listed and traded on the Shenzhen Stock Exchange (stock code: 002080).

- 1 -

PRINCIPAL ACCOUNTING DATA AND FINANCIAL INDICATORS OF SINOMA SCIENCE & TECHNOLOGY

		Unit: Yuan Currency: RMB
				Increase/decrease
				at the end of
	At the			this reporting period
	end of this	As at the end of last year	as compared with
	reporting period	Before adjusted	After adjusted	the end of last year
				(after adjusted)
Total assets	29,285,114,894.31	24,042,399,797.79	24,077,674,826.25	21.63%
Net assets attributable to equity holders of
the listed company	11,720,436,905.70	10,634,750,449.75	10,629,033,247.13	10.27%
				Increase/decrease
				of this
				reporting period
				as compared with
	This	The same period of last year	the same period
	reporting period	Before adjusted	After adjusted	of last year
				(after adjusted)
Operating revenue	13,590,466,951.30	11,446,869,453.23	11,458,341,013.43	18.61%
Net profit attributable to equity holders of the
listed company	1,379,965,477.82	934,141,403.30	929,755,023.82	48.42%
Net profit attributable to equity holders of the
listed company after deducting extraordinary
gains or losses	1,099,384,977.13	935,280,119.92	932,395,583.59	17.91%
Net cash flow from operating activities	2,969,563,548.54	1,578,669,631.25	1,563,801,474.06	89.89%
Basic earnings per share(RMB/Share)	0.8223	0.7237	0.7203	14.16%
Diluted earnings per share(RMB/Share)	0.8223	0.7237	0.7203	14.16%
Weighted average return on net assets(%)	12.35%	9.29%	9.25%	3.10%

Note: The full text of the annual report for the year ended 31 December 2019 of Sinoma Science & Technology will also be published on the website of the Shenzhen Stock Exchange (http:// www.szse.cn).

- 2 -

This announcement is made on a voluntary basis and not required specifically under the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

By order of the Board

China National Building Material Company Limited*

Yu Kaijun

Secretary of the Board

Beijing, the PRC

17 March 2020

As at the date of this announcement, the board of directors of the Company comprises Mr. Cao Jianglin, Mr. Peng Shou and Mr. Cui Xingtai as executive directors, Ms. Zhan Yanjing, Mr. Chang Zhangli, Mr. Tao Zheng, Mr. Chen Yongxin, Mr. Shen Yungang and Ms. Fan Xiaoyan as non-executive directors and Mr. Sun Yanjun, Mr. Liu Jianwen, Mr. Zhou Fangsheng, Mr. Qian Fengsheng and Ms. Xia Xue as independent non-executive directors.

• For identification purposes only

- 3 -