Deshi Co., Ltd.: the listing recommendation letter of Huarong Securities Co., Ltd. on the company's initial public offering and listing on the gem

Huarong Securities Co., Ltd

about

Texas United Petroleum Technology Co., Ltd. initial public offering and listing on the gem

Listing recommendation

Sponsor (lead underwriter)

(No. 8, Financial Street, Xicheng District, Beijing)

Statement

Dezhou United Petroleum Technology Co., Ltd. (hereinafter referred to as the "issuer", "company" or "Deshi shares") intends to apply for initial public offering and listing on the gem (hereinafter referred to as "this securities offering" or "this offering"), and has hired Huarong Securities Co., Ltd. (hereinafter referred to as "Huarong securities") as the sponsor of this offering (hereinafter referred to as "sponsor" or "the institution").

Huarong securities and its sponsor representatives have, in accordance 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 the registration of initial public offerings on the gem (for Trial Implementation) (hereinafter referred to as the "Registration Measures") Shenzhen Stock Exchange GEM Listing Rules (hereinafter referred to as "Listing Rules"), measures for the administration of securities issuance and listing recommendation business (hereinafter referred to as "measures for the administration of recommendation business") and other laws and regulations, China Securities Regulatory Commission (hereinafter referred to as "CSRC") and Shenzhen Stock Exchange (hereinafter referred to as "Shenzhen Stock Exchange" )In accordance with the relevant provisions of the, be honest, trustworthy, diligent and responsible, issue this 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.

Unless otherwise specified in this listing recommendation letter, relevant terms have the same meaning as in the prospectus of Texas United Petroleum Technology Co., Ltd. for initial public offering and listing on GEM (application draft).

catalogue

Declare that 1 catalog 2 I. overview of the issuer three

(i) Basic information of the issuer three

(2) Main business of the issuer...... 3

(3) Core technology of the issuer...... 4

(4) Main operating and financial data and indicators...... 7

(5) Main risks of the issuer...... 7 II. This securities issuance...... 17

(i) Overview of this offering 17 (II) information about the sponsor representative, Project Co sponsor and other members of the project team designated by the sponsor

...... 18 III. description of the relationship between the sponsor and the issuer 19 IV. commitments of the sponsor nineteen

(i) General commitment to the sponsor of this listing nineteen

(2) Item by item commitment to the sponsor of this listing...... 19 v. recommendation opinions of the sponsor on this securities issuance and listing...... 20

(i) The issuer has fulfilled relevant decision-making procedures for this securities issuance and listing (II) this issuance and listing of securities complies with the Listing Rules of Shenzhen Stock Exchange gem

Prescribed listing conditions twenty-one

(3) Work arrangement for continuous supervision of recommendation institutions...... 69

(4) Recommendation conclusion of the recommendation institution...... 70 I. overview of the issuer (I) basic information of the issuer

Dezhou United Petroleum Technology Co., Ltd

English Name: Dezhou United Petroleum Technology Co., Ltd

Registered capital: RMB 112777810

Legal representative: Cheng Guihua

Date of establishment of the company: June 30, 2004

Date of incorporation: June 9, 2017

Address: Jinghua South Road, Dezhou Economic Development Zone

Postal Code: 253034

Tel: 0534-2237999

Fax No.: 0534-2237998

Internet website: www.dupm.com cn.

E-mail [email protected].

Securities Investment Department of the Ministry of information disclosure and investor relations

Person in charge and telephone number: Secretary of the board of directors: Wang Haibin Tel.: 0534-2237999

(2) Main business of the issuer

The company is mainly engaged in the R & D, production, sales and leasing of special tools and equipment for oil drilling, and carries out engineering and technical services for directional drilling and horizontal drilling. Among them, the special tools for drilling are a variety of drilling tools based on screw drilling tools, and the special equipment for drilling mainly includes wellhead devices and drilling equipment. Since its establishment, the company has provided special tools and equipment for the oil drilling industry for a long time, and its main business has not changed.

The company has rich production experience and R & D technology accumulation. As the special equipment for oil drilling and production is applied to the exploration and production of onshore and offshore oil and gas, it must be suitable for a variety of harsh operating environments such as high temperature, high pressure and high sulfur, which requires manufacturing enterprises to carry out technological innovation according to the different geological, climate and natural environment of each oil and gas field, so as to adapt to the specific environment. For a long time, the company has focused on the R & D, production and sales of drilling tools, equipment products and other special tools and equipment used in oil and gas drilling projects. Through its continuous technology R & D investment, production practice, digestion and absorption of advanced technologies at home and abroad for many years, the company has accumulated a large number of advanced technologies and processes, And rich experience in manufacturing and R & D of oil drilling and production equipment, have a deep understanding and experience accumulation of the operating environment of major oil and gas fields in China, and have strong practical experience and technology accumulation in production and R & D.

The company has stable high-quality customer resources. The company's sales customers are engineering and technical service companies subordinate to China's large energy enterprises such as PetroChina, Sinopec and CNOOC, as well as some large coal energy mining institutions. Representative Chinese customers include Petrochina Company Limited(601857) group western drilling engineering Co., Ltd., Petrochina Company Limited(601857) group Chuanqing Drilling Engineering Co., Ltd., Sinopec Southwest Petroleum Engineering Co., Ltd., Sinopec Zhongyuan Petroleum Engineering Co., Ltd., Shandong Qiuji Coal Mine Co., Ltd., etc. the company provides a series of drilling tools, equipment products and high-quality engineering and technical services with stable quality for a long time, Established a stable cooperative relationship with customers.

The company has large-scale production and supply capacity. Providing long-term and stable large-scale production services for a series of drilling tools and equipment products to meet customers' diversified product needs is an important embodiment of the company's competitiveness. After years of development, the company has strong R & D, design and production capacity in the field of screw drilling tools. The products are suitable for various specifications of screw drilling tools with a diameter of 1-7 / 8 ″ ~ 26 ″ wellbore, which are divided according to the outer diameter Φ 43~ Φ 286 has 26 sizes, including equal wall thickness structure, straight body, single bend, adjustable wellhead angle and other structural styles, which can be used under different temperatures and mud media. The product has the characteristics of high torque, high power, high efficiency, wide flow range, stable operation, easy maintenance, high reliability and long service life.

The company has obtained many honors and qualifications in the process of operation. The company was selected into the list of the third batch of specialized and new "little giant" enterprises of the Ministry of industry and information technology, and successively won the "high-tech enterprise", "Shandong recognized enterprise technology center", "leading enterprise of Dezhou Petroleum Equipment Industry Cluster Technological Innovation Strategic Alliance", "national intellectual property advantage enterprise", "Shandong postdoctoral innovation practice base" "Academician workstation of Shandong Province", "2018 Petrochina Company Limited(601857) top 50 petrochemical equipment manufacturing enterprises" and "famous brand products" and other honorary qualifications. At the same time, the company is a qualified supplier of petroleum companies such as PetroChina and Sinopec. Its main products such as screw drill and casing head have passed the American API quality management system certification, as well as the qualified supplier qualification of many subordinate units in the system such as PetroChina and Sinopec. (3) Core technology of the issuer

The company focuses on the R & D, production and sales of screw drilling tools and other special equipment used in oil and gas drilling projects. Through its continuous technical R & D investment, production practice, industry university research cooperation with colleges and universities, digestion and absorption of China's foreign advanced technology and technical consultation of external experts for many years, the company has accumulated a large number of advanced technologies and processes, It has strong technical R & D advantages. The company's core technologies are as follows:

Product sequence core technology function and innovation corresponding patent and technology innovation technology product category number technology name technology achievement source type stage application

The high torque of drilling tools forms a new transmission torque ZL 2015 1 through the design of spine universal shaft and spline Wan invention patent: independent integration of batch series product 1 transmission technology shaft, R & D and innovative production of screw 0292432.9

Product sequence core technology function and innovation corresponding patent and technology innovation technology product category number technology name technology achievement source type stage application

Operation mode, combined with a separate seal lubrication system invention patent: drilling tool system, the torque output is greatly improved, ZL 2015 1

Compared with the traditional petal structure, it is increased by 50% to 0438734.2

Come on.

It consists of several centralizers of different structures and sizes

Horizontal well tool composition, combined with special screw structure invention patent: Series 2 deviation stabilizing technology, the drilling tool enables the large displacement directional well ZL 2015 1 to cooperate and integrate batch screw technology and 0222444.4 development and innovation in the drilling process of horizontal well deviation stabilizing section. The drilling tool has a constant deviation angle and reduces the deviation in the drilling process

Number of orientations.

The centralizer set on the shell has several invention patents: Series 3 reaming screw diameter guide hole, and the reaming knife is set at the head end of rotor ZL 2016 1 self integrated batch screw rod drilling tool. This structure has good adaptability to 0045621.0 R & D and innovative production of drilling tool centralization.

Through a cemented carbide strip and steel body

The radial bearing is produced by the process, and the matrix is adopted

Use cemented carbide strips and fill the gap

The radial shaft is filled with tungsten carbide powder and the bushing is closed. Later, the invention patent: Series 4 carries out the steps of heating, heat preservation, air ZL 2014 1 independent original batch screw manufacturing, cold and machining in the bell furnace. This method is modified under the condition of 0053333.0 R & D and innovative production of drilling tools without increasing the complexity of the process

Change the impact strength of the bearing body to avoid cracking

The service life and stability of the product are improved

Sex.

The utility model is internally equipped with a hammering device at the lower end of the rotary punch transmission shaft: a series of 5 hammering screws and a rotary sleeve body, which can provide a high-frequency 0153201.1 R & D and innovative production tool impact force for the drill bit in the process of drilling ZL 2012 2 independent integrated batch screw drill, and improve the rock breaking speed of the drill head.

It is composed of water nozzle, anti falling shaft and rotor,

High pressure separation completes the mud utility model during the use of screw drill: independent integrated batch Series 6 flow

 

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