3-1-3 listing recommendation letter (Registration draft) (Weifeng Electronics (Guangdong) Co., Ltd.)

Shenwan Hongyuan Group Co.Ltd(000166) securities underwriting and recommendation Co., Ltd. on the initial public offering of shares of Weifeng Electronics (Guangdong) Co., Ltd. and its listing on the gem

Listing recommendation

Sponsor

April, 2002

Shenzhen Stock Exchange:

As the sponsor of Weifeng Electronics (Guangdong) Co., Ltd. (hereinafter referred to as “the issuer”, “the company” and “Weifeng Electronics”) for the initial public offering of shares and listing on the gem, Shenwan Hongyuan Group Co.Ltd(000166) securities underwriting sponsor Co., Ltd. (hereinafter referred to as “the sponsor”, ” Shenwan Hongyuan Group Co.Ltd(000166) underwriting sponsor”) and its sponsor representative have been in accordance with the company law of the people’s Republic of China The securities law of the people’s Republic of China, the measures for the administration of the registration of initial public offerings on the gem (for Trial Implementation), the rules for the examination and approval of the issuance and listing of shares on the gem of Shenzhen Stock Exchange and other laws and regulations, as well as the relevant provisions of the CSRC and Shenzhen Stock Exchange, are honest, trustworthy, diligent and responsible, issue the listing recommendation letter in strict accordance with the business rules and industry self-discipline norms formulated according to law, and ensure that the documents issued are true Accurate and complete.

The relevant information is reported as follows: I. Basic information of the issuer (I) basic information

Weifeng Electronics (Guangdong) Co., Ltd

English Name: wcon Electronics (Guangdong) Co., Ltd

The registered capital is 54942396 million yuan

Legal representative: Li Wenhua

Unified social credit code 91441900745512430d

Date of establishment of the company: November 29, 2002

Date of establishment of the joint stock company: July 15, 2019

Address: 01A, Changxing Road, Ludong community, Humen Town, Dongguan City, Guangdong Province

Postal Code: 523935

Tel: 076985358920

Fax No.: 076985358915

Internet website: www.wcon.com cn.

E-mail [email protected].

Department in charge of information disclosure and Investor Relations: Department, person in charge and telephone number of Securities Department: Zhu Yingwu

Tel: 076985358915

(II) the issuer’s main business, core technology and R & D level

1. Main business of the issuer

The company is committed to providing high-end precision connector products and solutions, specializing in the R & D, design, production and sales of industrial control connectors, automobile connectors and new energy connectors. The products can be widely used in a series of application scenarios such as industrial control and automation equipment, new energy vehicle “three electricity” system, photovoltaic inverter system and so on. Connector is an indispensable basic component in electronic equipment, which plays a key role in the quality and performance of electronic equipment. The company’s main products have reached the same technical level as world-class manufacturers, and provide high-end precision connector products and solutions for many well-known enterprises at home and abroad.

The company has formed a development pattern with industrial control connectors as the main body and automobile and new energy connectors as the two wings. Especially in the field of industrial control connectors, the company is at the leading level in China and is a representative enterprise in the localization of industrial control connectors. The company has successively passed UL certification in the United States, cul safety regulation certification in Canada, and UL witness laboratory certification in the United States. Its products comply with EU RoHS and reach environmental protection directives, and obtained iatf16949 quality management system certification in the automotive industry. Under the business model of customized customer demand and product production platform, the company will actively grasp the opportunities of localization substitution in combination with existing technical reserves and customer resources, and make use of its own cost advantages and localized service advantages to continuously improve market share and maintain competitiveness.

2. Core technology and R & D level of the issuer

(1) Core technology of the issuer

As of December 31, 2021, the company has obtained 98 domestic patents, including 6 invention patents, 90 utility model patents, 2 design patents and 1 German utility model patent, covering industrial control, new energy vehicles, Cecep Solar Energy Co.Ltd(000591) photovoltaic and other fields. The core technologies of the company are independently developed, and there are no disputes such as technology infringement. The core technologies and their applications are as follows:

Technical name and technical features the technology adopts the corresponding patent number of the technology

Products from technology

Through the special design of the terminal structure, the end

Due to the unstable matching and holding force between the automatic sub of the terminal block and the plastic, the assembly process of the independent terminal zl2011102457520 is more convenient to realize the processes of automatic terminal assembly and automatic assembly screws of the self-designed sub block zl2016103579195 technology, so as to realize the large number of unmanned terminals

Automatic production conditions.

Through the locking of the connector latch and the plastic body

The multi-mode wire pair structure design ensures that the IDC plug of the line segment is connected with the independent zl2014101217608 board, and the installation end connector is not light in the vibration environment after installation. The simple cow / cow horn zl2016103579180 technology is easy to loosen and disconnect, and the electricity is not damaged when pulling the stay wire

Continuity and reliability of gas connections

Technical name and technical features the technology adopts the corresponding patent number of the technology

Products from technology

The utility model relates to a retention force requirement meter, which is suitable for the coordination of large-scale process combination and terminal structure, so as to increase the stability of automatic production of needle arrangement

When the policy is connected, the policy is designed through the special clock in process design, and the manufacturing technology of zl2014101248343 needle setter is designed. Now the needle setter can keep enough under high temperature

Retention and stability of retention

Through the innovative design of terminal connection mode, in

The utility model relates to a post completion process (assembly process) applicable to a stamping die

The bending size can only be completed by automatic surface welding, so as to improve the coplanarity accuracy of the welding surface of the connector connected by the independent busbar zl2017207751034 and ensure the user’s design

Design quality in high-speed automatic surface welding process

stability

An applicable male terminal contact shrapnel adopts “s” shape design, lengthens the length of the force wall of the shrapnel with contact in the center of the mother seat, and can realize the self-determination of the shrapnel

In the case of large displacement, only a small amount of plastic design busbar zl201420196707 is produced Deformation of x-connector connection technology ensures the stability of positive force of terminal contact

Therefore, the contact reliability is improved

Rotary shrapnel contact terminal and tray drawer are adopted

Type PCB fixed structure, easy for users to install

Multifunctional hard / single, easy to operate, and there is a design between the tray and the fixed frame

Soft board to board with dovetail groove matching structure, the tray can be easily pulled out and pushed from the main board to board zl2014101648045 connector, and a mounting buckle connector is designed at the lower part of the tray

After the spring and light bar are installed, the tray is pushed to the end,

The snap ring pops out and buckles tightly to ensure the fixing strength of the lamp strip

And contact reliability

IP68 waterproof connector, its product locking nut

Adopt advanced automatic embedding and injection technology, nut

Strong bite force and sealing with plastic body,

The screw lock prevents the nut from rotating.

Terminal appearance

Groove forming and sealing structure with high vibration resistance

High sealing strength and enhanced waterproof effect ensure that the connection technology of zl2018220778315 of autonomous vehicle electronics meets the protection grade of IP68 under harsh conditions. Product panel design connector

There is a silicone sealing ring, and the client is locked by screws

The connector and panel are sealed by extruded silicon rubber ring

Waterproof protection; Strength and reliability of threaded connection

High to ensure no leakage under high temperature and harsh environment

Seal failure

The connector is designed with a metal shell

The body is designed with a “harpoon” type metal fixed foot, which is convenient for customers

When installing with high reliability, the “harpoon” foot and PCB are soldered

The board is installed and connected together, and the connection between the connector and PCB is strong. The i/o zl2016202303910 device (the i/o connection degree is large, and the connector zl2014207809794 device is designed for the connector after the connector and panel are installed), and the connector can withstand

Very large lateral tensile stress in harsh machinery

It is not easy to be damaged under stress environment, so as to ensure the connection

Safe and reliable grounding

Technical name and technical features the technology adopts the corresponding patent number of the technology

Products from technology

Both sides of the connector adopt metal interlocking structure

It has an interlocking force of more than 10kgf to prevent the connector from loosening and disconnecting due to the high locking strength of zl2019217627865 under special circumstances such as high reliability of zl2019217627884, dynamic or pulling of the harness. The connector has a variety of independent line to board zl2018210272379 line to board connection and link modes: 90 degree IDC connection and 180 degree design connector zl2018210272025 technical wire connection, which can meet the needs of zl2018217521442 in different installation modes of users; The maximum current carrying capacity of the connector can reach 12a. Zl2020229353248 meets the user’s zl2020229353106 requirements for small spacing and large current carrying connectors

(2) R & D level of the issuer

Since its establishment, the company has established a development strategy with independent research and development as the core, adhered to professional production, from hardware and plastic mold development and design, to precision high-speed punch molding and precision plastic injection molding, and then to product automatic assembly, and is committed to providing customers with high-quality and high-price connector solutions. At present, the company has mastered the core technology of producing precision connector products such as connectors with small spacing, high current and high locking strength, and has formed a number of patented and non patented technologies, which can meet the higher performance requirements of customers.

After years of painstaking development, the company has been widely recognized by customers for its R & D level, production management, quality control and delivery ability, and has a high popularity and good brand image in the industry. Accordingly, the company has successfully entered the supply chain of a large number of core customers earlier, and the market foundation is stable. At the same time, the company pays attention to customer relationship management, establishes a perfect three-dimensional service system of pre-sales business and after-sales service, and feeds back customer needs timely and accurately, so as to accurately grasp the direction of product R & D.

The company’s high-quality customer base and perfect after-sales system enable the company to maintain a keen perception of the development trend of the industry. On the one hand, it is conducive to continuously strengthen technological innovation and process improvement, so that the products always match the market demand. On the other hand, it is conducive to timely adjust the direction of research topics according to market demand and take the initiative in technological innovation.

The management and core technicians of the company have been engaged in relevant industries for many years and have a deep understanding of connector production process and technology. The company attaches importance to the stability of core technical personnel and has taken effective incentive mechanism and talent protection measures to fully mobilize the enthusiasm and creativity of employees and avoid the adverse impact of personnel loss on the promotion of research projects and new product development of the company. At the same time, the company insists on paying equal attention to talent introduction and training, has established a perfect talent attraction, incentive, training and assessment mechanism, and actively plans to establish an intern training base to provide a stable guarantee for the transmission of high-quality R & D talents.

Project December 31, 2021 December 31, 2020 December 31, 2019 December 31 / 2021 / 2020 / 2019

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