Changjiang Securities Company Limited(000783) underwriting and recommendation Co., Ltd
about
Shenzhen Sosen Electronics Co.Ltd(301002) issue convertible corporate bonds to unspecified objects
of
Listing recommendation
Sponsor (lead underwriter)
28th floor, No. 1198, Century Avenue, China (Shanghai) pilot Free Trade Zone
March, 2002
statement
Changjiang Securities Company Limited(000783) underwriting recommendation Co., Ltd. (hereinafter referred to as "the recommendation institution" or "Changjiang recommendation") accepts the employment of Shenzhen Sosen Electronics Co.Ltd(301002) (hereinafter referred to as "the issuer", " Shenzhen Sosen Electronics Co.Ltd(301002) " or "the company") as the recommendation institution of Shenzhen Sosen Electronics Co.Ltd(301002) issuing convertible corporate bonds to unspecified objects (hereinafter referred to as "the issuance"), Issue this listing recommendation letter for the issuer's issuance.
The recommendation institution and the recommendation representative have complied with the company law of the people's Republic of China (hereinafter referred to as the "company law"), the securities law of the people's Republic of China (hereinafter referred to as the "Securities Law") and the measures for the administration of securities issuance and listing recommendation business (hereinafter referred to as the "measures for the administration of recommendation") The measures for the administration of securities issuance and registration of companies listed on the gem (for Trial Implementation) (hereinafter referred to as the "measures for the administration of registration"), the rules for the listing of shares on the gem of Shenzhen Stock Exchange (hereinafter referred to as the "Listing Rules"), the guidelines on the content and format of the recommendation letter for listing on the gem of Shenzhen Stock Exchange and other relevant laws In accordance with the administrative regulations and the provisions of the China Securities Regulatory Commission (hereinafter referred to as the "CSRC") and the Shenzhen Stock Exchange (hereinafter referred to as the "Shenzhen Stock Exchange"), this listing recommendation letter is issued in strict accordance with the business rules and industry data specifications formulated according to law, through due diligence and careful verification, and the authenticity of the documents issued is guaranteed Accurate and complete.
Unless otherwise specified, the abbreviations and terms used in this listing recommendation letter are consistent with the prospectus for Shenzhen Sosen Electronics Co.Ltd(301002) issuing convertible corporate bonds to unspecified objects.
1、 Basic information of the issuer (I) basic information of the issuer
Chinese name Shenzhen Sosen Electronics Co.Ltd(301002)
English Name: Shenzhen sosen Electronics Co., Ltd
Stock abbreviation Shenzhen Sosen Electronics Co.Ltd(301002)
Stock Code: Shenzhen Sosen Electronics Co.Ltd(301002)
Shenzhen Stock Exchange gem
Date of establishment: July 8, 2011 (limited company)
December 26, 2016 (joint stock company)
Listing date: June 7, 2021
Legal representative: Tian nianbin
The registered capital is 94.52 million yuan
Registered address: building A3, Gonghe fourth industrial zone, Shajing street, Bao'an District, Shenzhen
Tel: 075529358800
Fax No.: 075529358800
E-mail [email protected].
The general business items are: switching power supply, LED power supply, power adapter, charger, converter within the business scope of the town, technical development and sales of LED lighting products; China's trade, import and export of goods and technology. The licensed business items are: the production of switching power supply, LED power supply, power adapter, charger, ballast and LED lighting products.
(II) main business of the issuer
Since its establishment, the company has been focusing on the R & D, production and sales of medium and high-power LED driving power products. Focusing on the LED driving power product field that has been deeply cultivated for ten years, and closely following the development trend of technology and demand in the downstream LED lighting application market, the company has formed a product business system in three application fields of "plant lighting + industrial lighting + outdoor lighting", which is currently a product business system in China One of the most competitive supplier brands in the field of high-power LED drive power products.
The company's products are mainly supplied to downstream LED lighting manufacturers for manufacturing medium and high-power LED lighting products. The terminal products are mainly used in large outdoor LED lighting facilities such as urban roads and bridges, highways, tunnels and airports, as well as industrial LED lighting facilities such as industrial plants and warehouses, In recent years, the company has formed a prominent market position in the field of LED plant lighting driving power supply with the advantages of first mover business layout, successfully created a new growth point of the company's business, and continuously expanded to the layout of emerging application fields such as smart lighting and UV lighting, so as to realize the value extension of product application. (III) core technology and R & D level of the issuer
1. Basic information and specific characterization of core technology
The issuer is a high-tech enterprise recognized by the state, and has been recognized by Shenzhen enterprise technology center and Guangdong engineering technology research center. Through long-term independent research and development, the issuer and its subsidiaries have 150 authorized patents (including 24 invention patents) and 8 registered software copyrights, and have formed an independent product core technology system, The details are as follows:
Preface core technology overview technology innovation number name level source type
This technology is applied to the constant power control of the power output.
Through pair loss
The voltage signal at the output end is sampled, and the voltage signal connected in series at the negative end of the LED is analyzed
The current sampling resistor samples the current signal and the constant power control unit
The constant power drive is respectively connected with the constant current control unit and the constant voltage control unit, and cross regulates the voltage and current sampling signals transmitted to the technical output of China's independent original 1 power supply, so as to realize the constant control of the output power of the power supply through advanced R & D and innovation. This technology through intelligent control
Technology, modular design, lower overall cost, full
Modular, standardized, intelligent and highly reliable power supply
Exhibition demand
By integrating one or more dimming communication technologies into the power supply,
Real time communication with the outside world can realize the real-time communication of intelligent power supply
Remote dimming control. This technology will be used inside the power supply through isolation technology
The multifunctional external control signals are physically isolated, and various different digital China independent original 2 dimming technology control signals or analog signals are converted into IC recognizable 0-10V control advanced R & D innovation signals to control the current at the output of the power supply, so as to realize real-time
Continuous and visual dimming effect. The implementation of this technology can improve the power consumption
The safety and reliability of the source can realize the remote control of the smart city through
Dimming realizes secondary energy saving with remarkable effect
This technology is used to improve the reliability of power supply in extreme environment. adopt
Lightning protection circuit is added inside the LED driving power supply to connect with the fire respectively
Line, zero line and lightning protection ground wire shall be connected to prevent lightning strike
The differential mode signal generated by lightning stroke is forcibly clamped and absorbed to produce
The common mode signal generated by lightning surge can be effectively discharged to the ground. When used outdoors, not only China's independent original 3 suppression technology can effectively suppress lightning surge and protect driving power supply and load, but also advanced R & D and innovation can protect other connected electrical appliances. The use of this technology,
It can greatly improve the application of LED driving power supply in areas with frequent lightning
The application range in complex electromagnetic interference environment enhances the LED drive
The reliability of power supply effectively protects LED lamps and controllers,
Sensors and other instruments and equipment are very practical
A microcomputer controller (MCU) is integrated inside the power supply to connect with external data
By writing intelligent control program, the LED driver is realized
Intelligent control of power supply. MCU interface can realize two-way data transmission
External environmental information (such as electrical parameters and optical parameters) is transmitted through the sensor
Number, temperature, humidity, sound, video, location, etc.),
Programmable electricity can feed back real-time information to the control center. The control center can analyze and process the information fed back to China's independent original 4-way design technology, and send commands to MCU (adjusting advanced R & D and innovation technology, light, color matching, communication, recording, broadcasting, etc.) for effective control.
And the program can be modified in real time through the user terminal
To learn and adapt to different scenes by themselves; Enhancement of technological innovation
The function of LED driving power supply is, which makes the LED driving power supply intelligent
The hub of smart city is the reality of a new generation of smart lighting and health lighting
Now, it provides great convenience
This technology through the original overvoltage, undervoltage, overcurrent, voltage stabilization
Short circuit, over temperature circuit and structure provide comprehensive protection for the power supply,
To improve the stability of the power supply under high temperature, high humidity conditions and sudden changes of working conditions
5 safety, prevention and safety, and further improve the response ability of the power supply to environmental changes and changes in the working conditions of China's independent original protection technology. The power supply using this technology has advanced R & D and innovation, high protection ability, safety and reliability, and can not only be used in the room
It can also be used in outdoor, chemical plants and oil fields
Stations and other lighting scenes with harsh and dangerous environment.
Driving power supply for plant lighting, and driving power for other purposes
Compared with the power source, the power and conversion efficiency are higher. This technology passed
Optimize the components used in the driving power supply, and improve the topology and power
The control strategy of high power and high rate converter skillfully optimizes the heat dissipation structure and loop control
6 efficiency plant system makes the power converter in the power supply always work in the working area with high conversion efficiency of China's independent original lighting power supply, which improves the conversion efficiency of the power supply. At the same time, advanced research and development of innovative driving technology can reduce the loss of power supply in rectification, power conversion and control links,
The copper loss and iron loss in magnetic devices such as transformers and inductors are further improved
Reduce the power loss of high-power power supply and comprehensively improve high-power
Power conversion efficiency.
2. Issuer's core technology protection measures
(1) The corresponding relationship between the issuer's core technology and patented or non patented technology is as follows:
Serial number: name of patented or non patented technology corresponding to core technology
Technique name
(1) A constant power control circuit for power supply (2017200488724)
(2) A constant power control driving circuit and driving power supply (2017113220662)
(3) 20182939 constant current power supply and a control circuit for reducing the power of 26939 constant current power supply
