Shandong Baoshida Petroleum Equipment Manufacturing Co.,...

Shandong Baoshida Petroleum Equipment

Manufacturing Co., Ltd

Content

Company Introduction ---------------------------------------------------------------------------------3 Polished Rod --------------------------------------------------------------------------------------------4 Hollow Sucker Rod ------------------------------------------------------------------------------------5 Solid Sucker Rod ---------------------------------------------------------------------------------------6 Sinker Bar -----------------------------------------------------------------------------------------------8 Sucker Rod Pump --------------------------------------------------------------------------------------9 Tubing Pump ------------------------------------------------------------------------------------------10 Special Sucker Rod Pump ---------------------------------------------------------------------------11 Electric Submersible Pumping System ------------------------------------------------------------12 Centrifugal Pump -------------------------------------------------------------------------------------13 Sucker Rod Coupling --------------------------------------------------------------------------------14 The Hollow Sucker Rod Antifriction Coupling --------------------------------------------------15 Centralizer ---------------------------------------------------------------------------------------------16 Motor Shaft --------------------------------------------------------------------------------------------17 Pump Barrel -------------------------------------------------------------------------------------------18 ESP（Electric Submersible Pump） Power Cable ---------------------------------------------19 ESP Motor lead Extension Cable ------------------------------------------------------------------21 Modified polypropylene insulated Logging cable -----------------------------------------------23

Baoshida Petroleum Equipment Manufacturing Co., Ltd. No.8, Kaiyuan Road, Jinan, China, 250101

3

Company Introduction

Shandong Baoshida Petroleum Equipment Manufacturing Co., Ltd., founded in 2002, is

specialized in design and development, processing petroleum machinery, manufacturing, sales and

service for the integration of high-tech enterprise. Located in national efficient ecological

economic zone of the Yellow River delta, the birthplace of Sheng Li Oil Field, with convenient

transportation, superior geographical position and rich cultural background, our company has

obtained the advantageous conditions for the development. The company has more than 200 staff,

including 10 senior engineers, 25 technical personnel, 68 junior college degree or above. The total

area 100000 square meters, producing over one hundred million RMB one year, the products are

exported to the United States, the Middle East, southeast Asia, Africa and other major countries.

The leading products are oil-well pumps, ESP cables, submersible motor, sucker rod,

wear-resisting couplings, motor shaft and various downhole tools, spreading all over the domestic

market.

The company passed the ISO9001, ISO14001, ISO18000 three system authentications, the

leading products are allowed to use the American Petroleum Institute (API emblem). The

company now has 36 national patent items, including the company leading research and

development of intelligent liner energy saving pump won a national key new product title, and

the intelligent control system got the National Information Industry Department's examination.

The company has the municipal enterprise technology development center, Dongying Baoshida

petroleum equipment research institute, keeping long-term cooperation with Chinese Academy of

Sciences, Shandong University, and the University of Petroleum, the Development of Science and

Technology for the company to provide technical support. The company has been rated as hi-tech

enterprise of Shandong province, Shandong province's 200 growth enterprise, Dongying city's

most growth top ten enterprises, Shandong petroleum equipment association director unit.

Since the establishment, the company has always adhered to the "people-oriented"

management concept, "objectives reached, splendor realized" as the enterprise management

culture, pursuing the progress of the staff and the development of the company as

the long development strategy to build the learning organization and harmonious enterprise.

Actively, making great efforts to improve enterprise culture, scientific and technological

innovation, and improving the influence to strengthen team execution.

Baoshida's profound enterprise culture, excellent management mode, reasonable mechanism

of employing, high-tech products, in the domestic and foreign sales network, strong R&D strength

will push us to realize our company's highest mission and core desire-----" create value, benefit

society, enrich employees ", and to build the "petroleum equipment industry first brand" as the

management goal.

Polished Rod

Features:

1. Three types: Polished rod-upset on one end, polished rod-normal type, polished rod-metal spray type. 2. Designed in accordance with API Spec 11B, 3. Manufactured through cold-drawing, rolled threading and surface grinding etc. 4. High strength, good toughness, smooth surface and long lifetime etc.

Mechanical properties

Name Size Grade Rel

(MPa)

Rm

(MPa)

A

(%)

Z

(%)

Length

(m)

H ≥795 965～1195 ≥ 10 ≥ 45

Polished

rod-upset on

one end

φ25

φ29

φ32

φ38

D ≥ 590 795～965 ≥ 10 ≥ 50

H ≥795 965～1195 ≥ 10 ≥ 45

Polished

rod-normal type

φ25

φ29

φ32

φ38

D ≥ 590 795～965 ≥ 10 ≥ 50

6.00

8.00

9.50

10.00

H ≥795 965～1195 ≥ 10 ≥ 45

Polished

rod-metal spray

φ32

φ38 D ≥ 590 795～965 ≥ 10 ≥ 50

6.00

8.00

9.14


Hollow Sucker Rod

Features:

1. The product reaches the SY/T5550-2006 “Hollow

sucker rod” D level standard.

2. It is a rod, of which the rod head and couplings,

through friction welding, are welded to seamless steel

tube ends or directly in the direct rammer of both ends

of seamless steel tube

3. It is a special product used for mining "high

condensation, high viscosity, high wax" crude oil

Technical specifications:

Specification

Threaded

nominal size

（in）

Rod body outer

diameter（mm）

Rod body

diameter(mm)

Coupling

diameter(mm)

Sucker rod

length(mm)

Short-circuit

length(mm)

KG34 1 9/16 34 23 50 8000～8500

KG36 1 9/16 36 25 50 8000～8500

KG36 1 9/16 36 24 50 8000～8500

KG36（GK） 16-6 36 24 54 8000～9000

KG40 1 7/8 40 28 59 8000～8500

500

1000

1500

2000

3000

KGG36 1 9/16 36 24 50 8000～12000

KGG36（GK） 1 9/16 36 24 54 8000～12000

KGG40 1 7/8 40 28 59 8000～12000

5


Solid Sucker Rod

6

Features：

1. Producing the sucker rod in accordance with

API SPEC 11B, SY/T5029 standard.

2. Meet oilfield HL, HY, KD, grade D etc.

3. Super high-tenacity, high strength and high

toughness, corrosion resistance, surface coating

materials.

Technical Parameters of Conventional Sucker Rod Product:

Mechanical properties Name Size Grade

Rm(MPa) Rel (MPa) A(%)200mm Z (%) Length (m)

K 620～795 415 ≥ 13 ≥ 60

C 620～795 415 ≥ 13 ≥ 50

Steel sucker

rod

And short

stem

φ16

φ19

φ22

φ25

φ29

φ32

φ38

D 795～965 590 ≥ 10 ≥ 50

7.62

8.00

9.14

10.00

http://www.baoshida-oil.com/en/UploadFiles/2011214161951344.jpg








7

Technical Parameters High Strength Anti-corrosion Stem product:

Name Size Grade Rm(MPa) Length (m)

High strength

anti-corrosion stem

φ16

φ19

φ22

φ25

φ29

φ32

KD 795～965

7.620

8.000

9.140

10.00

Technical Parameter Super High-tenacity Sucker Rod Product:

Name Size Grade Mechanical properties (MPa) Length (m)

Super high-tenacity

sucker rod

φ16

φ19

φ22

φ25

φ29

φ32

HL

HY

965～1195

7.620

8.000

9.140

10.00


Sinker Bar

Features:

8

there is the same external thread

or to the sucker rod on the lower end during

Spe

（in）

Dia

（mm）

n

the thread （in） rod （ft）fis k

（in）

con

rod （in）

1. Designed in accordance with API

Specification

2. Manufactured with high quality carbon steel or

alloy steel and

on both ends.

3. According to the standard, sinker bar can be

divided into two grades: Grade 1 and Grade 2. It

can be connected to the polished rod on the upper

end

use.

cifications meter of rod ominal diameter of Length of length of

hing nec

specifications of

necting sucker

1-1/4 31.75

1-3/8 34.93 15/16 5/8

1-1/2 38.10 1-1/16 3/4

1-5/8 41.28

1-3/4 44.45 1-3/16

25 4

7/8


Sucker Rod Pump

Features:

1. According to API Spec 11AX

2. Be divided into three types as RHA,

RHB and RHT.

3. Connecting with sucker rod, can be

pulled up and down with the sucker rod.

4. Convenient for the inspection and work

over.

Model mm(in)Nominal

Dia.

m(ft)Plunger

Length Stroke m

m3/d Pump

Constant

Tubing And

Thread

In Sucker

Rod

20-125RHAC/M 32(1.25) 1.14 2 3/8 3/4

25-150RHAC/M 38(1.50) 1.64 2 7/8 3/4

25-175RHAC/M 44(1.75) 2.24 2 7/8 3/4

30-225RHAC/M 57(2.25) 3.69 3 1/2 3/4

20-125RHBC/M 32(1.25) 1.14 2 3/8 3/4

25-150RHBC/M 38(1.50) 1.64 2 7/8 3/4

25-175RHBC/M 44(1.75) 2.24 2 7/8 3/4

30-225RHBC/M 57(2.25) 3.69 3 1/2 3/4

20-125RHTC/M 32(1.25) 1.14 2 3/8 3/4

25-150RHTC/M 38(1.50) 1.64 2 7/8 3/4

25-175RHTC/M 44(1.75) 2.24 2 7/8 3/4

30-225RHTC/M 57(2.25)

1.2-1.8

(4-6)

≤7.5

3.69 3 1/2 3/4

9


Tubing Pump

Features:

1. According to API Spec 11AX

2. Suitable for the shallow well with shallow

depth and high production

3. The barrel being connected to the tubing is

directly run into the well

4. The plunger is run into the barrel with the

sucker rod.

Model mm(in)Nominal

Dia.

m(ft)Plunger

Length Stroke m

m3/d Pump

Constant

Tubing And

Thread In Sucker Rod

20-125TH 32(1.25) 0.6-7.3 1.14 2 3/8NU/EU 3/4

25-125TH 32(1.25) 0.6-7.3 1.14 2 7/8NU/EU 3/4

20-150TH 38(1.50) 0.6-7.3 1.64 2 3/8NU/EU 3/4

25-150TH 38(1.50) 0.6-7.3 1.64 2 7/8NU/EU 3/4

20-175TH 44(1.75) 0.6-7.3 2.24 2 3/8NU/EU 3/4

25-175TH 44(1.75) 0.6-7.3 2.24 2 7/8NU/EU 3/4

25-225TH 57(2.25) 0.6-7.3 3.69 2 7/8NU/EU 3/4

30-275TH 70(2.75) 0.6-7.3 5.50 3 1/2NU/EU 7/8

35-325TH 83(3.25) 0.6-7.3 7.70 4 NU/EU 7/8

40-375TH 95(3.75)

1.2-1.8

(4-6)

0.6-7.3 10.26 4 1/2NU/EU 1

10


Special Sucker Rod Pump

1. Features:

2. 1. Applicable for wells with sand, gas, and

high viscosity oil, slant wells, slicing wells,

tubingless wells and so on.

3. 2. We can design and manufacture all

kinds of special type pumps and parts

according to the field situations and the

customer’s requirements.

Including:

(1). Length of electroplating pump barrel can be up to 9m and other parts included rods and tubes

can be up to 10m by using performance of closed loop barrel plating and horizontal deep hole honing,

which is accorded with the environmental protection;

(2). All kinds of plunger made of stainless steel, electroplating or Ni-P-spray-welding processes;

(3). All series of valve balls and seats made of stainless steel, ceramic, carbide and so on.

11


Electric Submersible Pumping System

Specification:

1. An electric submersible pumping system consists of three parts: Surface part, Middle part and

Downhole ESP.

2. Surface part mainly includes: transformer, switchboard, junction box, wellhead and surface cable.

3. Middle part: power cable and cable extension

4. Downhole part includes: electric submersible motor, protector, gas separator and multi-stage

centrifugal pump.

5. Application: Applicable to the production casing of 5″, 5 1/2", 7″,8 5/8", 9 5/8" and above.

head: ＜14760ft(4500m).

6. Capacity: 200-25160BPD (30—4000m3/d).

12

http://www.rodlesspump.com.cn/chanpin011.html






Centrifugal Pump

1. Pump is one kind of multi-staged centrifugal pump assembled in three types of complete float,

complete compressive and half float, and with a structure of radial flow and mixed flow.

2. Catalog: standard pump, abrasion resistant and anti-corrosion pump

13


Sucker Rod Coupling

Features:

1. Including sucker rod coupling, adapter

coupling and polished rod coupling.

14

sections

2. Designed in accordance with API Spec 11B

3. Manufactured with high quality carbon steel or

alloy steel

4. Generally there are two spanner square

TYPE SUCKER ROD COUPLING

TSM Nominal Size

in （））

）

Outer Diameter+0.13

-0.25

Inner diameter+0.13

（in

-0.25 （in

Outer Size（in）

O.D× Length

5/8 ＂ 1-1/2 15/16 1.500×4.000

3/4 ＂ 1-5/8 1-1/16 1.625×4.000

7/8＂ 1-13/16 1-3/16 1.812×4.000

1＂ 2-3/16 1-3/8 2.187×4.000

Full Size

1-1/8 ＂ 2-3/8 1-9/16 2.375×4.000

5/8 ＂ 1-1/4 15/16 1.250×4.000

3/4 ＂ 1-1/2 1-1/16 1.500×4.000

7/8＂ 1-5/8 1-3/16 1.625×4.000

1＂ 2 1-3/8 2.000×4.000

Slim Hole

1-1/8 ＂ 2-1/8 1-9/16 2.187×4.000


The Hollow Sucker Rod Antifriction Coupling

Specification:

• This production adopts

international advanced thermal

spraying technology. Mix highly

wear-resistant materials (Silicon,

Boron etc) and friction additive

into Nickel based alloy powder.

Through high-temperature flame

spraying, making the mixture coated on the surface of blank. After all kinds of surface treatment, the

HRC≥55, Ra<0.2 and the coefficient of friction between the anti-abrasion coupling and the tube

reaches 0.01.

• Because of the characteristic feature of super-high hardness and low friction, the rod and tube

service life have been much prolonged.

• By reason of prominent effect, the production stand out in the group of the same products,

worked as the first choice in control partial abrasion

15


Centralizer

Features:

1. Connecting with the sucker rod, with

perfect centralizing effect. It solves the

problem of the oil well partial abrasion and

also plays the scraping wax function

2. greatly extend the tube and rod service

life and prolong the period of the pump

inspection

16

d.

3. Working principle: Using the pumping

unit head moving up and down to drive the

centralizer on the pumping rod , which

ensures the friction position not fixed in the

same point. Thus, the wearing time of the

centralizer is extended, meanwhile, the

centralizing and scraping wax function

is realize

4. Model: 3/4”, 7/8”, 1” 1-1/4.


Motor Shaft

Specification:

1. Pump shaft is the main spare part of ESP unit,

with the main material of K500 Monel alloy.

2. Having twist and stretch resistant mechanical

properties.

3. The property of resistant to high temperature and

corrosion ensures the pump’s service life at the

circumstance of max. loading and strength.

Number Product name Diameter Materials Length

1 Hollow motor shaft ￠25 35CrMo Customer-made




17


Pump Barrel

18

Specification:

1. Select high quality carbon steel as

material.

2. After plating chromium, inside

surface hardness reaches to

HRC66-72 with good abrasion

resistance. Clad layer and basal body

joint tightly without any porosity,

sand holes and crack.

3. It solves many questions like

anticorrosion, acid proofing, alkali prevention and antiscale etc. Can be used in wells with sand,

water and mild corrosive medium.

4. Greatly reduce oil field work frequency and cost.

5. At present, we can provide service of plating Cr and honing for series of pump barrel..

.


ESP（Electric Submersible Pump） Power Cable

Product Standard

19

250℃

The Product is manufactured according to

requirements of GB/T17650-2008.

The product is applicable for power

supply of ground control cabinet and

connection cable for electric submersible

pump of rated voltage below 3kV and

6kV.

Operating Properties

●Rated Voltage：1.8/3~3.6/6kV

● Normal Operating Temperature ：

90~

Type and Name

Type Name

QYPF(Y) Polypropylene（PP）insulated butadiene PVC compound sheath bare steel tape armored with interlock

ESP flat(round) power cable

QYPN(Y) Polypropylene（PP）insulated butadiene rubber inner sheathed bare steel tape armored with interlock

ESP flat(round) power cable

QYPFI PP insulated UV protection compound sheath bare steel tape armored with interlock ESP flat power

cable

QYYFQ Polyimide F46 compound film sintering/F46 compound insulated lead inner sheath bare steel tape

armored with interlock ESP flat power cable

QYEQ(Y) EPR insulated lead inner sheath bare steel tape armored with interlock ESP flat(round) power cable

QYEN(Y) EPR insulated butadiene rubber inner sheath bare steel tape armored with interlock ESP flat(round)

power cable

QYYFTT

Polyimide F46 compound film/F46 compound insulated fluorine plastic inner sheath bare steel tape

armored with interlock ESP flat power cable

Range of Production

Type Sectional Area mm2 No. of Cores

All Types 10-42 mm2 3


20

Main Technical Parameter

Voltage

Class

Imbalance Rate of

DC Resistance %

length

tolerance

DC Leakage

Resistance 15.6

℃Ω/km

Voltage Proof

No breakdown in 5

minutes

Insulation

Resistance at 20℃

3kV ≦2 5‰ ≦15uA/km 27kV/5min ≧2500

6kV ≦2 5‰ ≦15uA/km 35kV/5min ≧2500

Specifications and Parameters

DC resistance of

Conductor

at 20℃

≤Ω/km

Cushion Thickness

of Sheath mm

Nom.

Thickness

of

Insulation

mm

Nom.

Thickness

of Sheath

mm Armored

Oil-resi

stant

Type No. of

Cores

Nominal

cross-sectional

area mm²

No./Filament

Diameter

Tinned Untinned

3kV 6kV 3kV 6kV Clad Clad

16 1/4.62 1.16 1.15 1.9 2.3 1.3 1.3 0.68 0.75

20 1/5.19 0.86 0.84 1.9 2.3 1.3 1.3 0.68 0.75

33 1/6.50 0.56 0.54 1.9 2.3 1.3 1.3 0.68 0.75

QYPFI

QYYFQ

QYYFTT

3

42 1/7.34 0.44 0.43 1.9 2.3 1.3 1.3 0.68 0.75

16 1/4.62 1.16 1.15 1.9 2.3 1.3 1.3 0.68 0.75

20 1/5.19 0.86 0.84 1.9 2.3 1.3 1.3 0.68 0.75

33 7/2.47 0.56 0.51 1.9 2.3 1.3 1.3 0.68 0.75

QYPF(Y)

QYPN(Y)

QYEQ(Y)

QYEN(Y)

3

42 7/2.76 0.44 0.43 1.9 2.3 1.3 1.3 0.68 0.75

注：铅护套厚度为 1.0mm。Note：Lead sheath thickness is 1.0mm.


ESP Motor lead Extension Cable

Product Standard

The product is manufactured according to the requirements of

GB/T17650-2008.

Application

The product is applicable for power supply of power cable

terminal and electric submersible pump of rated voltage below

3kV.

Operating Properties

Rated Voltage：1.8/3~3.6/6kV

Min. Ambient Temperature: -40℃

Normal Operating Temperature：90~250℃

Min. bending radius is no less than 30 times of cable thickness.

Type and Name

Type Name

QYJYFTTX Polyimide compound film sintering/PFA compound insulated fluorine plastic inner sheath stainless steel tape

armored with interlock ESP flat motor lead extension cable

QYJYEQ Polyimide compound film sintering/EPR compound insulated lead inner sheath stainless steel tape(galvanizing

steel tape) armored with interlock ESP flat motor lead extension cable

QYJYFTQX Polyimide F46 compound film sintering/ F46 compound insulated lead inner sheath stainless steel(galvanizing

steel tape ) armored with interlock ESP flat motor lead extension cable

Range of Production

Type Sectional Area mm2 No. of Cores

All Types 10-20 mm2 3

Main Technical Parameter

Voltage

Class

Imbalance Rate of

DC Resistance %

length

tolerance

DC Leakage

Resistance 15.6

℃Ω/km

Voltage Proof

No breakdown in 5

minutes

Insulation

Resistance at 20℃

3kV ≦2 5‰ ≦15uA/km 27kV/5min ≧2000

21


22

Specifications and Parameters

Cushion Thickness of

Sheath mm

Nom.

Thickness

of

Insulation

mm

Nom.

Thickness

of Sheath

mm Armored Oil-resistantType

No.

of

Cores

Nominal

cross-sectional

area mm²

No./Filament

Diameter

DC

resistance

of

Conductor

at 20℃ 3kV 3kV

垫层

Clad

垫层

Clad

10 1/3.67 1.83 0.8 0.8 0.68 0.75

13 1/4.12 1.38 0.8 0.8 0.68 0.75

16 1/4.60 1.15 0.8 0.8 0.68 0.75

QYJYFTTX 3

20 1/5.18 0.84 0.8 0.8 0.68 0.75

10 1/3.67 1.83 0.8 0.8 0.68 0.75

13 1/4.12 1.38 0.8 0.8 0.68 0.75

16 1/4.60 1.15 0.8 0.8 0.68 0.75

QYJYEQ

QYJYFTQX 3

20 1/5.16 0.84 0.8 0.8 0.68 0.75

Note: All the ESP cables above are customizable.


Modified polypropylene insulated Logging cable

23

ical load.

Standard The product is manufactured according to the

standard of SY/T6600—2004.

Application

This product is applicable to all types of oil and gas

well logging, perforation, coring and paraffin oil

wells, viscosity, pour point and so on. It’s such kind

of oil field exploration armored steel cable which

could bear all the above mentioned mechan

Operating Characteristics ● The lowest temperature that cable could work under should not <-30C

● Max temperature is 1500C for short period (2h maximum duration each time) ；

Max temperature is 150 for short period ( 2h maximum duration each time)

● Minimum bending radius is 30 times of cable diameter.

Type and name

Type

Description

Production range of cable

WGSB-4.7 Single core modified polypropylene insulated

double-deck steel thread armored Logging cable

W4B-4.7 Four cores modified polypropylene insulated double-deck

steel thread armored Logging cable



W3BP-5.6 Three cores modified polypropylene insulated screening


W4BP-5.6 Four cores modified polypropylene insulated screening






W4BP-8.0 Four cores modified polypropylene insulated screening


W7B-6.4 Seven cores modified polypropylene insulated


W7BP-10.8 Seven cores modified polypropylene insulated screening


Cable diameter:

￠4.7~￠13.2mm

Conductor

cross-sectional area:

0.2~2.0 mm²


24





W7BPP-11.8 Seven cores modified polypropylene insulated split-phase

screening double-deck steel thread armored Logging

cable





Main performance Type Nominal

Diamete

r mm

Conductor

nominal

cross

section

mm²

Conductor

structure

No. /

diameter

Rated

pull-off

Force

kN

(20 ℃ )

Conductor

DC

Resistance

Ω/km

(20℃)

Insulation

resistance

M Ω/km

Capacit

or

(1kHz)

μF/km

Frequen

cy

voltage

test

WGSB-4.7 4.70 0.56 7/0.32 15 ≤36.00 ≥200 ≤0.17

W4B-4.7 4.70 0.22 7/0.20 13 ≤84.30 ≥200 ≤0.19

WGSB-5.6 5.60 1.01 19/0.26 25 ≤18.10 ≥200 ≤0.22

W3BP-5.6 5.60 0.24 7/0.21 25 ≤84.30 ≥200 ≤0.17

W4BP-5.6 5.60 0.24 7/0.21 25 ≤84.30 ≥200 ≤0.15

WGSB-8.0 8.00 1.02 7/0.43 45 ≤18.10 ≥200 ≤0.14

W3BP-8.0 8.00 0.56 7/0.32 45 ≤36.00 ≥200 ≤0.18

W4BP-8.0 8.00 0.49 7/0.30 45 ≤36.00 ≥200 ≤0.20

W7B-6.4 6.40 0.24 7/0.21 25 ≤84.30 ≥200 ≤0.13

W7BP-10.8 10.80 0.56 7/0.32 80 ≤36.00 ≥200 ≤0.19

W3BP-11.8 11.80 0.56 7/0.32 80 ≤18.10 ≥200 ≤0.14

W7BP-11.8 11.80 0.56 7/0.32 80 ≤36.00 ≥200 ≤0.14

W7BPP-11.

8

11.80 0.56 7/0.32 80 ≤36.00 ≥200 ≤0.16

W7BP-12.6 12.60 0.56 7/0.32 80 ≤36.00 ≥200 ≤0.14

W7BP-13.2 13.20 0.56 7/0.32 85 ≤36.00 ≥200 ≤0.14

1KV

5 min

不击穿

No

breakdo

wn

Cable Length We could supply modified polypropylene insulated cable of length between 2000 m---8000 m,

with entire root, its length deviation is between -2%~+3%, any length of cable could be provided

after mutual agreements.


25


26

Shandong Baoshida Petroleum Equipment Manufacturing Co.,...

Documents

Transcript of Shandong Baoshida Petroleum Equipment Manufacturing Co.,...