East China Engineering Science And Technology Co.Ltd(002140) : East China Engineering Science And Technology Co.Ltd(002140) announcement on the holding subsidiary being determined as the first bid winner candidate for the EPC project of ammonium dihydrogen phosphate for battery of Yunnan Sanhuan Sinochem chemical fertilizer Co., Ltd

Announcement on the bid winning of the first hydrogen fertilizer project held by Yunnan Sanhuan Securities Co., Ltd. No.: 002140 {002a-014

The company and all members of the board of directors guarantee that the contents of the announcement are true, accurate and complete without false records, misleading statements or major omissions.

On February 16, 2022, East China Engineering Science And Technology Co.Ltd(002140) (hereinafter referred to as “the company”) from the website of Yunnan Tendering Co., Ltd( http://www.ynzbw.com. )According to the website, Guizhou Donghua Engineering Co., Ltd. (hereinafter referred to as “Guizhou Donghua”), the holding subsidiary of the company, has been determined as the first bid winning candidate for the EPC project of 100kt / a battery ammonium dihydrogen phosphate project of Yunnan Sanhuan Sinochem chemical fertilizer Co., Ltd. (hereinafter referred to as “the project”). The publicity of the bid winning candidates is hereby announced as follows:

1、 Project overview

1. Project name: EPC project of 100kt / a battery ammonium dihydrogen phosphate project of Yunnan Sanhuan Sinochem chemical fertilizer Co., Ltd;

2. The employer: Yunnan Sanhuan Sinochem chemical fertilizer Co., Ltd. (hereinafter referred to as “Yunnan Sanhuan”); 3. Bidding agent: Yunnan Tendering Co., Ltd;

4. Publicity period: February 16, 2022 – February 21, 2022;

5. The first candidate for winning the bid: Guizhou Donghua Engineering Co., Ltd;

6. Bid price: 319.4346 million yuan, with a discount of 3% for new projects;

7. Construction period commitment: mechanical completion on August 31, 2022; Chemical commissioning before September 10, 2022;

8. Project overview: the process technology of the project adopts Yunnan Yuntianhua Co.Ltd(600096) (hereinafter referred to as ” Yunnan Yuntianhua Co.Ltd(600096) “) the extraction wet process phosphoric acid refining technology with independent intellectual property rights authorized by Sichuan University. The company has completed the EPC of 100kt / a ammonium dihydrogen phosphate unit for battery and its supporting projects according to the feasibility study data provided by Yunnan Sanhuan.

2、 Basic information of both parties

(I) basic information of Guizhou Donghua

Guizhou Donghua, a holding subsidiary of the company, is invested and established by the company, Guizhou Xinxin Industrial Holding Group Co., Ltd. and Guizhou Qiandong enterprise management partnership (general partnership) (i.e. employee stock ownership platform), with shareholding ratios of 51%, 34% and 15% respectively.

Guizhou Donghua was founded in July 2008 with a registered capital of 50 million yuan. The legal representative is Mr. Gong Zhihai, the unified social credit code is 91520000429200064e, the enterprise type is other joint stock limited company (unlisted), and its domicile is No. 91, Zunyi Road, Nanming District, Guiyang City, Guizhou Province. It is mainly engaged in chemical industry, petrochemical industry, construction, medicine, municipal administration, environmental treatment Technical consultation, technical development, overall planning, engineering design, general contracting, equipment procurement and complete supply, construction and installation management, technical training and other businesses in the fields of gas and heat.

Guizhou Donghua, formerly known as Guizhou chemical and pharmaceutical planning and Design Institute, was established in September 1958. It has class a design certificates in the chemical, petrochemical, pharmaceutical and construction industries and class a credit certificates of engineering consulting units; He has undertaken more than 2000 various engineering projects, including more than 50 general contracting projects, and has won national, provincial and ministerial scientific and technological progress awards, excellent engineering design awards and other awards for many times.

(II) basic information of the Third Ring Road in Yunnan

Yunnan Sanhuan was established in April 2005. The enterprise type is other limited liability company, the unified social credit code is 91530000772678786x, the legal representative is Mr. Zhao Jianbo, the registered capital is RMB 80 million, and the domicile is Haikou Industrial Park, Xishan District, Kunming City, Yunnan Province. It is mainly engaged in the production and operation of chemical fertilizers and chemical products, import and export business, etc.

Yunnan Sanhuan is invested and established by Yunnan Yuntianhua Co.Ltd(600096) and SINOCHEM chemical fertilizer Co., Ltd., with shareholding ratios of 60% and 40% respectively. Yunnan Yuntianhua Co.Ltd(600096) is a listed company in Shanghai Stock Exchange. The controlling shareholder is Yunnan Yuntianhua Co.Ltd(600096) Group Co., Ltd. and the actual controller is the state owned assets supervision and Administration Commission of Yunnan Provincial People’s government. The company has no relationship with Yunnan Sanhuan, its controlling shareholder and actual controller. 3、 Risk and impact tips

At present, the bid winning items of the project are still in the publicity period and the bid winning notice has not been obtained. The company will disclose the latest progress of the bid winning items of the project in time. Please pay attention to investment risks.

If the bid is successfully won and the project is implemented, it will help to improve the engineering performance of the company and Guizhou Donghua in the field of ammonium dihydrogen phosphate for batteries, and will have a positive impact on the operating revenue and operating performance of the company and Guizhou Donghua during the implementation period.

4、 Documents for future reference

Publicity documents of bid winning candidates for EPC project of 100kt / a battery ammonium dihydrogen phosphate project of Yunnan Sanhuan Sinochem chemical fertilizer Co., Ltd.

It is hereby announced.

East China Engineering Science And Technology Co.Ltd(002140) board of directors

February 17, 2002

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