China National Building Material : VOLUNTARY ANNOUNCEMENT - PRELIMINARY RESULTS 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)

VOLUNTARY ANNOUNCEMENT

PRELIMINARY RESULTS 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 preliminary results of Sinoma Science & Technology Co., Ltd. ("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 -

1. PRINCIPAL FINANCIAL DATA AND INDICATORS OF SINOMA SCIENCE & TECHNOLOGY FOR THE YEAR ENDED 31 DECEMBER 2019

			Currency: RMB
	This reporting	Corresponding
Items	period	period of last year	Increase/Decrease
Operating revenue	13,579,709,286.54	11,458,341,013.43	18.51%
Operating profit	1,554,828,063.87	1,296,803,268.23	19.90%
Total profit	1,666,332,094.75	1,173,511,492.30	42.00%
Net profit attributable to
shareholders of the listed
company	1,385,326,082.43	929,755,023.82	49.00%
Basic earnings per share	0.8255	0.7203	14.61%
Weighted average ROE	12.40%	9.25%	3.15%

At the end of this reporting period

At the end of last
reporting period	Increase/Decrease

Total assets	29,289,243,981.32	24,077,674,826.25	21.64%
Equity attributable to shareholders
of the listed company	11,743,125,254.39	10,629,033,247.13	10.48%
Share capital	1,678,123,584.00	1,290,864,296.00	30.00%
Net assets per share attributable
to shareholders of the listed
company	7.00	8.23	-14.95%

- 2 -

1. INFORMATION ON THE OPERATING RESULTS AND FINANCIAL STATUS OF SINOMA SCIENCE & TECHNOLOGY
   During the reporting period, Sinoma Science & Technology achieved operating revenue of RMB13,579.7093 million, representing an increase of 18.51% as compared to the corresponding period of last year. Total profit amounted to RMB1,666.3321 million, representing an increase of 42.00% as compared to the corresponding period of last year. The net profit attributable to shareholders of the listed company amounted to RMB1,385.3261 million, representing an increase of 49.00% as compared to the corresponding period of last year.
   During the reporting period, the principle business of Sinoma Science & Technology experienced sound operation and development. Both the revenue and profit of Sinoma Science & Technology increased as compared with the corresponding period of last year. For wind turbine blade business, with strong demand in the Chinese domestic wind power market which was affected by policies, Sinoma Science & Technology actively promoted product structure upgrade in its wind turbine blade business, leading technological progress and market demand of the industry by its forward-looking innovative products, resulting in significant increase in its production, sales and profitability, and maintaining its leading market share. For glass fibre business, the overall prosperity of the glass fibre industry has declined. Sinoma Science & Technology has continued to optimize production capacity and product structure and reduce production costs of its glass fibre business, and the overall operation of which maintained stable. For the lithium battery separator membrane business, Sinoma Science & Technology acquired Hunan Chinaly by increasing its capital contribution in the latter, which rapidly expanded its production capacity and enhanced its market position, hence it developed into a main supplier to major battery companies in China. At the same time, Sinoma Science & Technology actively pursued business development with mainstream battery companies abroad and has achieved bulk supply, hence the profitability during the reporting period increased significantly.

Shareholders and potential investors of the Company are advised to pay attention to investment risks and exercise caution when dealing in the shares of the Company.

- 3 -

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

28 February 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

- 4 -