Huatai United Securities Co., Ltd
about
Dalian dalikaipu Technology Co., Ltd
Listing recommendation
Sponsor (lead underwriter)
(401, building B7, Qianhai Shenzhen Hong Kong fund Town, 128 guiwan fifth road, Nanshan street, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen)
About Huatai United Securities Co., Ltd
Recommendation letter for listing of Dalian dalikaipu Technology Co., Ltd
Shenzhen Stock Exchange:
As the sponsor of Dalian dalikaipu Technology Co., Ltd. (hereinafter referred to as "the issuer", "dalikaipu" and "the company") for initial public offering and listing on the gem, Huatai United Securities Co., Ltd. and its sponsor representatives have, in accordance with the company law of the people's Republic of China, the securities law of the people's Republic of China and the measures for the administration of securities issuance and listing recommendation business The measures for the administration of the registration of initial public offerings on the gem (for Trial Implementation) (hereinafter referred to as the "administrative measures"), the rules for the listing of shares on the gem of Shenzhen Stock Exchange (hereinafter referred to as the "Listing Rules"), 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) overview of the issuer
Name of issuer: Dalian dalikaipu Technology Co., Ltd
Registered address: No. 21, Jinyue street, dongjiagou street, Jinzhou District, Dalian, Liaoning
Date of establishment: March 17, 2011
Registered capital: 340 million yuan
Legal representative: Liu Xibi
Contact: 041187927508
Business scope: R & D, production, sales and after-sales service of electronic products, China's general trade, import and export of goods and technology. (except for the projects prohibited by laws and administrative regulations, the projects restricted by laws and administrative regulations can be operated only after obtaining the industry license) (the projects that must be approved according to law can be operated only after being approved by relevant departments.)
(II) the issuer's main business, core technology and R & D level
1. Main business of the issuer
The company's main business is the R & D, manufacturing and sales of RF microwave ceramic capacitors, and is committed to providing customers with high-performance and high reliability electronic components. At present, the company's main products include RF microwave multilayer ceramic capacitors (RF microwave MLCC) and RF microwave single-layer ceramic capacitors (RF microwave SLCC). They have the characteristics of high Q value, low ESR, high self resonance frequency, high withstand voltage and high reliability. They are widely used in RF microwave circuits of civil industrial products and military products. With excellent product performance and service capability, the company has established cooperative relations with many well-known manufacturers of mobile communication base station equipment, medical imaging equipment, military equipment, rail transit signal equipment, semiconductor RF power supply, laser equipment and instruments.
Relying on its own technological R & D strength and product strength, the company's R & D project of high Q-value, RF microwave multilayer ceramic capacitor won the first prize of the growth group of electronic information industry in the national finals of the seventh China Innovation and entrepreneurship competition; The company's key technology development and industrialization project of high Q / high-power multilayer chip ceramic capacitor won the second prize of Liaoning science and Technology Progress Award and the first prize of Dalian Technological Invention Award; The company's high-Q microwave / RF ceramic capacitor was rated as "specialized and new" product technology by Liaoning industry and Information Technology Commission in 2018; In 2020, the company won the honorary title of "specialized and new" small giant enterprise of the Ministry of industry and information technology; In 2021, the company's main product RF microwave MLCC was rated as "the Sixth Batch of single champion products in manufacturing industry" by the Ministry of industry and information technology and China Industrial Economic Federation. 2. Core technology and R & D level of the issuer
(1) Core technology of the issuer
After years of continuous investment and experience accumulation, the issuer has formed a number of core technologies in the field of production and technology. The issuer's core technology system can effectively support the R & D and production of the company's main products and ensure the stable growth of main business income. At present, the issuer's core technology system includes five aspects: porcelain powder formula, process and technology. The introduction of core technology is as follows:
Category s / N technical name technical description / progressiveness application product source
Category s / N technical name technical description / progressiveness application product source
It is mainly used for the production of RF micro sintering
Low dielectric constant and high wave MLCC products. The capacitor has the characteristics of high Q dlc70 series 1-1 temperature sintered microwave ceramic original value, low ESR, high self resonance frequency, high chip RF micro ceramic formula, working temperature (175 ℃), high reliability and so on. The product meets gjb192b-2011
Requirements of
It is mainly used for the production of low-temperature sintering RF micro
Low dielectric constant and low original wave MLCC products. The capacitor has the characteristics of ultra-low dlc75 series 1-2 temperature sintered microwave ceramics, ESR, high self resonance frequency, high working temperature chip RF micro porcelain formula (150 ℃), etc. the product can be used in wave MLCC mobile communication base stations, etc
1 - the formula is original, master the principle of ceramic slurry formula, and can adjust the formula of RF microwave 1-3 ceramic slurry to obtain the density, toughness and powder MLCC of the whole ceramic diaphragm
Distribution uniformity
Mastering the dissolution mechanism of PVB resin can root
Binder (adhesive) originally selected different types of RF microwave 1-4 formula according to the characteristics of different ceramic powders, obtained PVB, configured into different binder, and provided MLCC
High PVB solubility, no medium pores
hole
Under 360 ℃ welding environment, ordinary flux has been carbonized by micro strip RF micro combination and cannot be cleaned.
The company, together with Beijing Bo MLCC and shi1-5 high temperature flux Development University of technology, has jointly developed high temperature frequency microwave flux to solve the power problem of high temperature flux and flux cleaning MLCC
By optimizing the structural design, the capacitor
2-1 RF microwave capacitors originally have high Q value, high self resonance frequency and high parallel RF microwave 2- capacitors. The structural design of the capacitor has obtained the joint resonance frequency, high RF withstand voltage and high MLCC
The reliability of structural design and the consistency of performance indexes are high
The MLCC of MLCC is better controlled by optimizing the size of MLCC and obtaining the structure through the internal electrode junction RF microwave 2-2 Q value control technology
Q value size
Radio frequency microwave MLCC master the principle of ESR and Q value test,
The ESR and Q values of 3-1 are originally obtained from theoretical calculation, actual processing and fabrication to soft RF microwave high frequency test technology, and a set of ESR and Q value test MLCC is completed
Test system
3 - test the RF resistance of the capacitor. It can measure the RF microwave technology of the capacitor at different frequencies. 3-2 voltage test technology can obtain the frequency breakdown voltage and flashover discharge voltage, and improve MLCC
High customer prototype design pass rate
It can measure the maximum voltage of capacitors at different frequencies
3-3 capacitor RF power, original large RF current and RF power. It can provide verification data for the iteration of RF and microwave rate test technology. RF current MLCC
Provide data to customers and improve customer design
Category s / N technical name technical description / progressiveness application product source
Success rate
To master the mechanism of dispersant, you can
For the powder with original particle size and polarity, the corresponding RF microwave 4-1 dispersion technology is selected to obtain the dispersant, so that the powder particles are evenly dispersed in the MLCC slurry, and the ceramic diaphragm is compact, uniform
smooth surface
Ceramic and metal electrodes are used in MLCC production
Co firing technology requires the two to shrink the curve phase
Ceramics and metals are close to each other. By adjusting the common material RF microwave 4-2 pole matching technology of metal slurry, the selection and reasonable addition amount are obtained, so as to control the shrinkage of electric MLCC pole and make ceramics and metals
The contraction curve of 4-multilayer electric electrode is close to that of MLCC
The vessel process is not layered or cracked
Control technology low temperature sintered ceramics are easy to be corroded by electroplating solution
The electrical corrosion of low burn capacitor affects the electrical performance of capacitor. Through dlc75 series 4-3 plating solution to corrode the porcelain body, the relevant parameters of the plating solution are obtained, and the corrosion degree of the ceramic body by the chip RF micro control technology of the plating solution is controlled to make the low temperature
