Kelin Environmental Protection Equipment Inc(002499) : Announcement on reply to letter of concern of Shenzhen Stock Exchange

Securities code: Kelin Environmental Protection Equipment Inc(002499) securities abbreviation: ST Colin Announcement No.: 2022028 Kelin Environmental Protection Equipment Inc(002499)

Announcement on the reply to the letter of concern of Shenzhen Stock Exchange

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.

Kelin Environmental Protection Equipment Inc(002499) (hereinafter referred to as “listed company” or “company”) recently received the attention letter on Kelin Environmental Protection Equipment Inc(002499) (No. 173 [2022] and the attention letter on Kelin Environmental Protection Equipment Inc(002499) of the company Department of Shenzhen Stock Exchange (No. 198 [2022]). The company has implemented the relevant issues one by one, and now announced the relevant replies as follows:

1、 According to your company’s reply, the business that achieved revenue growth in 2021 is mainly reflected in two parts, among which: the customer concentration of technology R & D and outsourcing business is high, and the revenue in the fourth quarter of 2021 is about 76 million yuan; The customers of information technology service business are relatively scattered, with high order demand frequency, short business cycle and small amount of single service. The revenue in the fourth quarter of 2021 is about 74.5 million yuan. Please explain whether your company has the primary responsibility to provide goods or services to customers, whether it can control or lead the use of such goods or services and obtain almost all economic benefits from them, and whether it bears pricing power and corresponding risks in combination with the contract terms, transaction essence, business model and development process of the new business. On this basis, explain how to apply the “total amount method” or “net amount method” for revenue recognition of the new business, Whether it complies with the relevant provisions of the accounting standards for business enterprises and the guidelines for the application of regulatory rules – Accounting No. 1 issued by the CSRC. The annual audit accountant is requested to conduct special verification and give clear opinions.

[company reply]:

(I) technology R & D and outsourcing business

Technology R & D and outsourcing business refers to providing partners with project management consulting, process design and optimization, design and R & D, system training and operation and maintenance support services. This part of the business of yiyoule network technology (Beijing) Co., Ltd. (hereinafter referred to as “yiyoule”) is mainly to provide R & D services to end customers in many industries, including software R & D services such as project planning, design, R & D, operation and maintenance.

(1) Business process

At this stage, yiyoule’s business team is specifically responsible for market development, product sales, customer maintenance, fund collection and other work, and adopts a variety of sales modes such as direct sales by business personnel and recommendation by industry and third-party companies. The specific business development process is as follows:

① Business docking personnel obtain customer information through various channels and carry out docking, and preliminarily communicate cooperation intention;

② The technical department cooperates with the business docking personnel to carry out in-depth technical details communication with potential customers. Discuss the matching degree between technology and demand of both parties, and confirm whether both parties have the basis for cooperation.

③ The two sides discussed business terms such as transaction price, payment method, technical demand and project implementation arrangement, and signed a cooperation agreement.

④ According to the specific technical requirements, the technical department organizes the members of each project team to form a working group to carry out technical research and development, and communicates the technical requirements and demand adjustment with the customer at any time.

⑤ Complete the technical R & D work and deliver it to the customer for acceptance. If necessary, assist the customer to build relevant operation environment and train relevant business personnel.

(2) Business implementation

Yi Youle allocates project personnel according to technical R & D services and needs, technical difficulties and time schedule, and carries out demand analysis and scheme design, software design and R & D, testing, acceptance and delivery according to customer needs during project development.

As of December 31, 2021, yiyoule has provided customers with software technology R & D services, involving SaaS e-commerce platform, big data analysis services and other projects. The technical modules / systems independently developed and written by yiyoule and the corresponding staffing are as follows:

S / n project name product personnel R & D personnel testing personnel operation and maintenance personnel

1 SaaS e-commerce Ping Du ye Kong Yong, Li , Jiang Qiang, Wang Yan, Chao Ni, Liu Jia, Yang Nan Yang Tai, Liu min

2 big data analysis Zhao Zhao , Wang Qing, Hou Liang, Chen Gong, Wang sun , Wang Yu, Dong system Dragon

3 digital music fu Niu , Zhao Shui, Zhang , Chao Ni, Du Jing, Liu Jiasun Wei, hu Yang min

4. After e-commerce management, Du ye, Zhang Bao, Shang Wei, Chen , Yang Zhou, Wang , Gong Jun, Hou Yang Nan, sun Yang Tai system shuaiwei and hu min

5 IM communication system fu Ming, Yang Lin, hu Feng, Xu Pei, Zhang sun Wei, hu Dong long

6 content recommendation: Zhao Chen Wang, Yu Bo, Liu bin, Wang Yu, hu Dong tonglong

7. Advertising is ye Lu , Dai , ma Yan, Wang Yu, hu Dong tonglong

Shen Lei, Su Chai Dong, Guo fan, Wang , Yu Hong, Wang Sheng, Li Lu, Wu Yang 8 live broadcast system Hui, Liu Guo, Zhang , Zhang Bao, Wang Gong, Wang , Zhao , song Ling, Zhi Guang, Wang Yu, hu Minhui Tao, Chen Yi

Hu Feng, Guo Li Ping, Chen , Li , Yao , Li , Li , LV , Li sun Wei, hu , Yang 9 short video Dong, Guo Lei, Zhang Wei, Xu Lu, Shi Dong, Zhang Qi, , Li Xiong, Wang Yu, Yang min, Yang Qi Chongnan

10 NFT avatars fu Li Ping, Chen , LV , Zhang Qi sun Wei, Hu Dong Xiao, long

11 big data analysis Zhao Zhao , Wang Qing, Hou Liang, Chen Gong, Wang Wang Yu, Yang Dong platform Nanlong

12 “thousand towns and thousand stores” Du yehou Shuai, Liu Jia, Gong Jun, Zhao Shui, Zhang , Chao Ni, Yang Nan, sun Dong e-commerce platforms are, hu long

Digital marketing: Wang Yu, Yang Dong 13 according to analysis technology, Zhao Zhao , Wang Qing, Hou Liang, Chen Gong and Wang Nanlong service projects

In the process of business implementation, the system architecture and main codes of the above projects are self-developed.

In the process of Yi Youle providing services to customers, the core service contents such as demand analysis, schedule planning, core module / system research and development are independently undertaken by Yi Youle. At the same time, the overall progress, overall implementation, implementation results and risks of the project are responsible and managed by Yi Youle.

The company adheres to independent research and development and technological innovation, and sets up a research and development department in yiyoule to carry out product research and development and technological innovation. The software copyrights obtained by yiyoule are shown in the following table:

Order copyright Name Certificate No. Registration No. registration date party copyright No. type person

1 warehousing and logistics integrated collaborative management soft book registration Zi No. 2021sr213 December 2021 original take easy music system v1 088623969770 dated 26

2 e-commerce real-time transaction risk control management system software Zhudeng Zi No. 2021sr214 original acquisition of yiyouletong V1 in December 2021 No. 08865661, 3035, 26

3. The marketing recommendation based on big data is soft Zhudeng Zi No. 2021sr214, originally taken from yiyouletong V1 in December 2021 No. 08865637 was issued on the 26th of 3011

4. The user portrait based on big data is soft book registration Zi No. 2021sr214, originally taken from yiyouletong V1 in December 2021 08865666, 3040, 26

5. Financial management based on e-commerce software registration Zi No. 2021sr214 original access to yiyoule system V1 in December 2021 No. 088656653039 dated 26th

6. The new Omni channel retail live broadcast with goods is soft book registration Zi No. 2021sr214, which was originally taken from yiyouletong V1 in December 2021 088659513325 26

7. Digital supply chain selection service software registration No. 2021sr214 original take easy music V1 in December 2021 No. 088659503324 dated 26th

8 digital online payment risk control detection software Zhudeng Zi No. 2021sr214 original access to yiyoule system V1 in December 2021 088659493323, 26

9 intelligent logistics visualization system v1 0 ruanzhideng Zi No. 2021sr214, December 2021, original take Yi Youle No. 8865948, obtained on December 26, 3322

10. Intelligent AI online customer service system v1 0 ruozhdz No. 2021sr213202

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