Dear partners:

In order to meet the company's operational management and business development needs, unify the corporate brand image, ensure the smooth implementation of the company's strategic plan and reflect the future development pattern, the original Beijing Shengkeda Technology Co., Ltd. has officially changed its name to Beijing Shengjian Microelectronics Technology Co., Ltd. The relevant matters are now announced as follows:

1. The company launched a new name on September 22, 2021: Beijing Shengjian Microelectronics Technology Co., Ltd.

2. After the company's name is changed, the business entity and legal relationship will remain unchanged, the original contract will continue to be valid, and the original business relationship and service commitments will remain unchanged. However, in order to ensure the safety of funds, when important matters and payments are involved, please Confirm relevant information with the relevant person in charge of the company.

3. The original relevant rights and obligations will be inherited by Beijing Shengjian Microelectronics Technology Co., Ltd. in accordance with the law.

We sincerely apologize for the inconvenience caused to your company by the change of company name. Sincerely thank you for your company's consistent support and care. We will continue to maintain a pleasant cooperative relationship with you.

Beijing Shengjian Microelectronics Technology Co., Ltd. (formerly Beijing Shengkeda Technology Co., Ltd.) was established in 2017 and is a wholly-owned subsidiary of Shanghai Shengjian Environmental System Technology Co., Ltd. with a registered capital of 50 million. Beijing Shengjian Microelectronics Technology Co., Ltd. focuses on the supply of pan-semiconductor wet electronic chemicals and recycling system services. Its business covers engineering design; technology promotion services; import and export of goods, technology import and export; operation of environmental pollution control facilities; sales of chemical products (excluding Hazardous chemicals), machinery and equipment; engineering and technology research.

Shanghai Shengjian Environmental System Technology Co., Ltd. (hereinafter referred to as the "Company") is a domestic A-share main board listed company (stock code: 603324) that provides process waste gas treatment system solutions for China's pan-semiconductor industry. The company focuses on the R&D, design, processing and manufacturing, system integration and operation and maintenance management of pan-semiconductor process exhaust gas treatment systems and key equipment, and is committed to providing customers with customized, safe and stable exhaust gas treatment system solutions.

The company is headquartered in Shanghai and has subsidiaries including Shanghai Shengjian Ventilation Duct Co., Ltd., Jiangsu Shengjian Environmental Equipment Co., Ltd. and Beijing Shengjian Microelectronics Technology Co., Ltd. The company has been deeply involved in the field of pan-semiconductor process waste gas treatment for many years, serving SMIC, Hua Hong Semiconductor, Beijing Jiedian, Geke Micro, Zhuosheng Micro, Changdian Technology, BOE, Huaxing Optoelectronics, Huike Optoelectronics, Tianma Microelectronics, Weibo Microelectronics, etc. Well-known companies such as Cigna, Hehui Optoelectronics, Caihong Co., Ltd., ICRD, Silan Microelectronics, XinEn, Yuexin Semiconductor, Huawei HiSilicon, China Electronics Systems, Shennan Circuits, Tongwei Co., Ltd.

Relying on the design capabilities, professional talents and practical experience accumulated in the domestic pan-semiconductor industry, the company has expanded the application of advanced treatment technologies and comprehensive solutions to industries such as flue gas management and VOCs emission reduction, and gradually entered the supply and supply of pan-semiconductor wet electronic chemicals. Recycling and regeneration system service areas.

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