Eel25 Single Phase High Frequency Electrical DC Inverter Transformer Eel16 Eel25 Ee28 for Welding Machine by Manufacture Customized

China Eel25 Single Phase High Frequency Electrical DC Inverter Transformer Eel16 Eel25 Ee28 for Welding Machine by Manufacture Customized, Find details about China Single-Phase Transformer, High Frequency from Eel25 Single Phase High Frequency Electrical DC Inverter Transformer Eel16 Eel25 Ee28 for Welding Machine by Manufacture Customized

Model NO.
EEL25
Frequency Characteristics
High Frequency
Shape of Core
EE
Brand
Eayitech
Trademark
Eayitech
Specification
Small size, Low weight
Origin
Shenzhen
HS Code
8504319000
Model NO.
EEL25
Frequency Characteristics
High Frequency
Shape of Core
EE
Brand
Eayitech
Trademark
Eayitech
Specification
Small size, Low weight
Origin
Shenzhen
HS Code
8504319000
Eel25 Single Phase High Frequency Electrical DC Inverter Transformer Eel16 Eel25 Ee28 for welding machine by Manufacture Customized

Eel25 Single Phase High Frequency Electrical DC Inverter Transformer Eel16 Eel25 Ee28 for Welding Machine by Manufacture Customized

 
Eel Welding Transformer High Frequency Transformer Manufacturer

EEL25 DC High Frequency Inverter Welding Machine Transformer Welder 15:15 200:12:22:22

This transformer is widely used in DC Arc Inverter Welding Machine. The EEL25 series have different kinds of turn ratio which can be customized.


EEL16 EEL19 EEL22 EEL25 EEL28 EEL30 EEL33 high frequency transformer
1. High frequency transformer
2. Small size, Low weight
3. Suit for automatic operation
4. High power output
5. High efficiency low loss

Physical and Electrical Performance Parameters:
TypeShape StructureDimensionPower range
ABCDEF
EEL16Horizontal18.5Max13.1±0.528.0Max3.5±0.33.0±0.222.5±0.515W Max
EEL1922.0Max15.6±0.532.0Max3.5±0.33.5±0.224.2±0.520W Max
EEL2228.5Max17.8±0.537.0Max3.5±0.33.5±0.227.6±0.535W Max
EEL2528.5Max19.8±0.535.0Max3.5±0.34.0±0.227.2±0.545W Max
EEL16Vertical18.5Max30.1±0.515.9±0.53.5±0.32.7±0.212.2±0.515W Max
EEL1922.0Max29.3±0.516.0±0.53.5±0.34.0±0.210.0±0.520W Max
EEL2228.5Max27.7±0.517.0±0.53.5±0.35.0±0.212.5±0.535W Max
EEL2528.5Max32.8±0.517.5±0.53.5±0.35.0±0.212.6±0.545W Max
***We can design and manufacture customized part with specific requirement

Inductance: 0.5MHz---20MHz to be customized

Products Advantages:
1.Low loss
2.Excellent reliability
3.High Efficiency
4.Easy installation
5.It can be customized according to the requirements of customers and provide total design solutions to customer

Application:
1.Household Appliance.
2.Telecom
3.Consumer electronics
4.Switching power supply
5.Automatic control
6.Green lighting
7.Electric vehicles

 

More high frequency specifications for your reference
Series  Application
EE TransformerApplied in the switching power supply, main power transformer
EE10, EE13, EE16, EE19, EE22, EE25, EE28, EE30, EE33, EE35, EE40, EE42, EE55, EE65
PQ TransformerApplied in the linear filter, choke, pulse transformer, drive transformer
PQ2016, PQ2020, PQ2610, PQ2620, PQ2625, PQ3220, PQ3225, PQ3230, PQ3535, PQ4040, PQ5050
RM TransformerFilters, inductors and transformers for telecommunication other electronic equipment
RM4, RM6, RM8, RM8, RM10, RM12, RM14
EI TransformerVarious kinds of transformers and chokes
EI28, EI13, EI16, EI22, EI25, EI30, EI35, EI33, EI40
EEL TransformerWitching power supply, charges, alarm system
EEL13, EEL19, EEL22, EEL25
EF TransformerApplied in the switching power supply, main power transformer
EF16, EF12.6, EF20, EF25, EF30
EFD TransformerAuxiliary power transformer, main power transformer, choke coils
EFD15, EFD20, EFD25, EFD30, EFD40
UU TransformerVarieties of switching power supply transformer, choke coils et
UU9.8, UU10.5, UU16, UU20
EC TransformerApplied in the linear filter, current transformer, smoothing chock coil, drive transformer
 EC28, EC35, EC39, EC40, EC42, EC49
ER TransformerApplied in the linear filter, current transformer, smoothing chock coil, drive transformer
ER47, ER48, ER49


We make custom-design transformers as per your requirements.
Various bobbins as below:

* EE5,EE8.3,EE10,EE13,EE16,EE19, EE22,EE25,EE28,EE30,EI30,EE33,EI33,EE40,EI40,EE55 series bobbins
* EF12.6/EF16/EF20/EF25/EF32 series bobbins
* ETD29/ETD34/ETD39/ETD44/ETD49/ETD54/ETD59 series bobbins
* ER28,ER35,ER42,EQ30,ERL28,ERL35,ERL39
* RM4/RM5/RM6/RM7/RM8/RM10/RM12/RM14 series bobbins
* PQ1616 to PQ5050 series bobbins
* EFD15,EFD20,EFD25,EFD30 series bobbins
* EPC13,EPC19,EPC25,EPC30 series bobbins
* EP7,EP10,EP13,EP17,EP20 series bobbins
* POT0905/POT1811/POT2311/POT2318/POT3019/POT3622 bobbins
* ER9.5/ER11/ER14.5 SMD series bobbins
* EI22 to EI50 series bobbins
* Toroid cores case and base holder series bobbins
* ET series bobbins
* UU.8/UU10.5/UU15.7 series bobbins
* UT20/ET20/ET24/ET28/ET35 series bobbins
* LAN transformers header & covers series bobbins
* ADSL transformers bobbin serises
* Power inductor base series
* ETD/EF/RM/UU/ER series clamps

More specifications for your reference
Series  Application
EE TransformerApplied in the switching power supply, main power transformer
EE10, EE13, EE16, EE19, EE22, EE25, EE28, EE30, EE33, EE35, EE40, EE42, EE55, EE65
PQ TransformerApplied in the linear filter, choke, pulse transformer, drive transformer
PQ2016, PQ2020, PQ2610, PQ2620, PQ2625, PQ3220, PQ3225, PQ3230, PQ3535, PQ4040, PQ5050
RM TransformerFilters, inductors and transformers for telecommunication other electronic equipment
RM4, RM6, RM8, RM8, RM10, RM12, RM14
EI TransformerVarious kinds of transformers and chokes
EI28, EI13, EI16, EI22, EI25, EI30, EI35, EI33, EI40
EEL TransformerWitching power supply, charges, alarm system
EEL13, EEL19, EEL22, EEL25
EF TransformerApplied in the switching power supply, main power transformer
EF16, EF12.6, EF20, EF25, EF30
EFD TransformerAuxiliary power transformer, main power transformer, choke coils
EFD15, EFD20, EFD25, EFD30, EFD40
UU TransformerVarieties of switching power supply transformer, choke coils et
UU9.8, UU10.5, UU16, UU20
EC TransformerApplied in the linear filter, current transformer, smoothing chock coil, drive transformer
 EC28, EC35, EC39, EC40, EC42, EC49
ER TransformerApplied in the linear filter, current transformer, smoothing chock coil, drive transformer
ER47, ER48, ER49





Packing and shipping
Eel Welding Transformer High Frequency Transformer Manufacturer



                                                 (Shielded) MTH, MTHII, MTP, MTB, MTE, MTL, MTF
High Frequency Eel Type Power Common Mode Filter Inductor Flyback Switching Mode Power Transformer
Physical and Electrical Performance Parameters:
TypeShape StructureDimensionPower range
ABCDEF
EEL16Horizontal18.5Max13.1±0.528.0Max3.5±0.33.0±0.222.5±0.515W Max
EEL1922.0Max15.6±0.532.0Max3.5±0.33.5±0.224.2±0.520W Max
EEL2228.5Max17.8±0.537.0Max3.5±0.33.5±0.227.6±0.535W Max
EEL2528.5Max19.8±0.535.0Max3.5±0.34.0±0.227.2±0.545W Max
EEL16Vertical18.5Max30.1±0.515.9±0.53.5±0.32.7±0.212.2±0.515W Max
EEL1922.0Max29.3±0.516.0±0.53.5±0.34.0±0.210.0±0.520W Max
EEL2228.5Max27.7±0.517.0±0.53.5±0.35.0±0.212.5±0.535W Max
EEL2528.5Max32.8±0.517.5±0.53.5±0.35.0±0.212.6±0.545W Max
***We can design and manufacture customized part with specific requirement

Inductance: 0.5MHz---20MHz to be customized

Products Advantages:
1.Low loss
2.Excellent reliability
3.High Efficiency
4.Easy installation
5.It can be customized according to the requirements of customers and provide total design solutions to customer

Application:
1.Household Appliance.
2.Telecom
3.Consumer electronics
4.Switching power supply
5.Automatic control
6.Green lighting
7.Electric vehicles



INDUCTOR DETAIL:

Inductor is a circuit element that generates electromotive force due to the change of the current passing through, thereby resisting the change of current. This property is called inductance.
There are many types of inductance components, which are called differently depending on their appearance and function. The enameled wire is wound in multiple turns, and the inductors often used as electromagnets and transformers are also called coils according to their appearance. It is used to provide large reactance to high frequency through direct current or low frequency. Depending on the function, it is often called choke or choke. Often used with ferromagnetic materials to install larger inductors used in transformers, motors and generators, also called windings. The wire passes through the magnetic substance without a coil shape. It often acts as a small inductance for high-frequency filtering, and is often called a bead according to its appearance.

High-frequency transformers are power transformers whose working frequency exceeds the intermediate frequency (10kHz). They are mainly used as high-frequency switching power supply transformers in high-frequency switching power supplies. They are also used as high-frequency inverters in high-frequency inverter power supplies and high-frequency inverter welding machines. Change the power transformer. According to the working frequency, it can be divided into several grades: 10kHz-50kHz, 50kHz-100kHz, 100kHz~500kHz, 500kHz~1MHz, and above 10MHz.
The power capacity of each core type varies due to differences in topology, operating frequency and temperature, flux density, and material grade.
* Siemens material grade 

WE CAN CUSTOM FILTER INDUCTOR TYPE :
   Common mode chokes(Line filters):
                                       
Type            Detailed Size
                                        
UU              UU9.8, UU10.5, UU16
                                        ET               ET20, ET24, ET28, ET35  
                                       SQ              SQ1212, SQ1515, SQ2418
                                       FT      FT20-22, FT20-21, FT20-15, FT20-13, FT20-10

                                    Toroidal    6X3X2, 6X3X3, 8X5X3, 9X5X3, 9X5X4, 10X6X3, 10X6X3.5, 10X6X5, 13X8X6, 14X9X5,                                                                           20X12X6,       22X14X8, 25X15X10, 5X15X12, 25X15X13, 28X14X10, 31X19X11, 31X19X13, 32X14X11,36X23X15, 38X18X13,                                              49X32X16 (Ferrite core); 16X10X6, 20X12.5X8, 25X16X10, 30X20X10, 30X20X15, 40X25X15,            50X40X20, 63X50X25, 80X63X25, 100X80X25, 130X100X25(Nanocrystalline core)

Inductors(Choke coils):
                                     Peaking/Drum    
4*6, 5*7, 6*8, 8*10, 9*12, 10*12, 10*16, 14*15, 16*18, 18*20
                                     Toroidal                     6X3X2, 6X3X3, 8X5X3, 9X5X3, 9X5X4, 10X5X4,10X6X3, 10X6X3.5, 10X6X5,                                                                        13X8X6, 14X9X5, 20X12X6, 22X14X8, 25X15X10, 25X15X12, 28X14X10, 31X19X11,                                                                    31X19X13, 32X14X11,36X23X15, 38X18X13, 49X32X16


                                  Rod 3X12, 3X15, 4X15, 4X20, 5X15, 5X20, 5X25, 5X30, 6X15, 6X20, 6X25, 6X30, 6X32, 6X35, 8X20, 8X30
                       SMD power inductors ( Unshielded)  MT, MTQ, MTF, MTG
                                                           (
Shielded) MTH, MTHII, MTP, MTB, MTE, MTL, MTF
High Frequency Eel Type Power Common Mode Filter Inductor Flyback Switching Mode Power Transformer


high frequency transformer :
 
NO.Product NameTypeDetailed Size
1High frequency transformersEEEE8.3, EE10, EE13, EE16, EE19, EE20, EE25, EE28, EE30, EE33, EE40, EE42, EE49, EE50, EE55, EE60, EE65, EE70, EE75, EE80, EE85
EC/ERER/EC20, ER/EC25, ER/EC28, ER/EC28, ER/EC29, ER/EC35, ER/EC40, ER/EC42, ER/EC49
ETDETD29, ETD35, ETD40, ETD49
EFEF16, EF20, EF25
EFDEFD15, EFD20/21, EFD25/26, EFD30
EDREDR2009, EDR2037, EDR2809, EDR2828, EDR3012, EDR3909, EDR4008
EPEP7, EP10, EP13
EPCEPC11.5, EPC13, EPC19, EPC25
EQEQ2512, EQ2610, EQ3209, EQ4013, 
POTPOT3016, POT3930
PQPQ2016, PQ2020, PQ2625, PQ2620, PQ3225, PQ3520, PQ3525, PQ3535, PQ4040, PQ49
RMRM6, RM8, RM10, RM12, RM14
2Common mode chokes(Line filters)UUUU9.8, UU10.5, UU16
ETET20, ET24, ET28, ET35
SQSQ1212, SQ1515, SQ2418
FTFT20-22, FT20-21, FT20-15, FT20-13, FT20-10
Toroidal 6X3X2, 6X3X3, 8X5X3, 9X5X3, 9X5X4, 10X6X3, 10X6X3.5, 10X6X5, 13X8X6, 14X9X5, 20X12X6, 22X14X8, 25X15X10, 5X15X12, 25X15X13, 28X14X10, 31X19X11, 31X19X13, 32X14X11,36X23X15, 38X18X13, 49X32X16 (Ferrite core); 16X10X6, 20X12.5X8, 25X16X10, 30X20X10, 30X20X15, 40X25X15, 50X40X20, 63X50X25, 80X63X25, 100X80X25, 130X100X25(Nanocrystalline core)
3Inductors(Choke coils)Peaking/Drum 4*6, 5*7, 6*8, 8*10, 9*12, 10*12, 10*16, 14*15, 16*18, 18*20 
Toroidal 6X3X2, 6X3X3, 8X5X3, 9X5X3, 9X5X4, 10X5X4,10X6X3, 10X6X3.5, 10X6X5, 13X8X6, 14X9X5, 20X12X6, 22X14X8, 25X15X10, 25X15X12, 28X14X10, 31X19X11, 31X19X13, 32X14X11,36X23X15, 38X18X13, 49X32X16
Rod 3X12, 3X15, 4X15, 4X20, 5X15, 5X20, 5X25, 5X30, 6X15, 6X20, 6X25, 6X30, 6X32, 6X35, 8X20, 8X30
4SMD power inductorsUnshieldedMT, MTQ, MTF, MTG
ShieldedMTH, MTHII, MTP, MTB, MTE, MTL, MTF
5Low frequency transformersEIEI14, EI16,EI19, EI24,EI28, EI30, EI35, EI38.5,  EI41,EI48,  EI57, EI60, EI66, EI74,  EI76, EI86, EI96, EI105, EI114
Toroidal OD:40mm---130mm;ID:20mm---100mmm;H:10mm---50mm.
6Planar transformerEIEi22
7CTUFUF15,Zero sequence current transformer, precision current transformer
8CoilT185*60,23.8
 

EE type Transformer Parameters

 
EE type transformer
Part No.Terminal
  Pins
Dimension mmTypeElectrical parameter
ABCInductanceOutput power(W)
EE-8.368.08.08.3V100.0uH0.2-3.0
EE-10811.510.210.2V80.0uH0.5-5.0
EE-131012.012.513.0V120.0uH0.5-8.0
EE-16-1614.813.316.0V90.0uH1.0-10.0
EEL-161028.516.021.9V600.0uH2.0-15.0
EE-19-1817.616.019.0V800.0uH3.0-30.0
EEL191031.516.021.1V1200.0uH3.0-30.0
EE-25-1620.018.225.2V2000.0uH3.0-45.0
EEL25835.317.525.2V2800.0uH3.0-45.0
EE-301021.029.230.0H900.0uH3.0-50.0
EE-401427.630.540.0H1500.0uH3.0-55.0
EE-42/15-11233.844.042.0H2000.0uH3.0-80.0
EE-42/20-11245.039.842.0V1900.0uH3.0-90.0
EE-552050.050.055.0H3000.0uH3.0-150.0
EE-651655.251.865.0H4500.0uH3.0-300.0


Application:
1. Photovoltaic
2. Household Appliance
3. Energy
4. Communications
5. High-power supply
6. Automotive electrics


Features:
  • Applied in a wide range
  • High operation frequency
  • Wide range of working voltage
  • Large power
  • Low temperature rising
  • Compact, light and easy surface mounting
  • Customized designs and specifications are accepted
  • Various types of transformers are available
  • Switching power transformer

High Frequency Transformer with Low Leakage Inductance and High-efficiency

  • High power and compact design
  • Utilizing high flux density ferrite cores with low loss and low temperature rise
  • Applicable frequency range: 20 to 80kHz
  • Operating frequency: higher than 200kHz
  • High magnetic flux and low-loss magnetic materials
  • With low leakage inductance and high-efficiency
  • Highest reliability of high-voltage
  • Designed according to customer's requirements to meet EI, ER, EE, and EEL model series
  • Advanced production technique and reliable full-automatic testing facilities
  • Customized specifications are welcome
  • Applications: PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments, and instruments and so on.
  • Factory Prices 500kHz RM LED Driver Power High Frequency Transformer for Electronic EquipmentsFactory Prices 500kHz RM LED Driver Power High Frequency Transformer for Electronic Equipments
product procedure 
The following picture showed you about all finished toroidal transformer production line and package with export standard carton and strong pallets:
Factory Prices 500kHz RM LED Driver Power High Frequency Transformer for Electronic Equipments

Equipment Exhibition

Our main equipments contained:  256 sets of automatic winding machines; 2 sets of automatic infrared drying tunnel furnace; the lab for car magnetic products; 1set of salt spray test machine,1 set of high-temperature storage test machine, 1 set of high humidity test machine and a set of old and heat shock test machine; 6 sets of automatic vacuum dipping machines; 3, fully automatic soldering machines, 600 set accessory Machines.

Custom Design Switching Power Ee Mode Series High Frequency Transformer
Factory Prices 500kHz RM LED Driver Power High Frequency Transformer for Electronic EquipmentsAbout our factory
Shenzhen Yiyi Technology CO., LTD is a professional transformer & inductor manufacturer, Our factory has abundant strength which integrates design, production, selling of transformer, inductor etc. Quality is the soul of the product and the life of a company, In order to provide high quality and energy-saving green products, we strictly carry out the international Quality Management System: ISO 9001, ISO 14001, What's more, we had acquired IATF16949, CQC, UL certification.

We Had 2 production bases in China, one named Yongzhou Meikai Electronics Co., Ltd located in Fujian Longyan. The other is Dongguan Zhici Electronics co.,ltd, located in Xiamen. The factory is about 24800 square meters, The total production capacity up to 8 million pieces per month: High-Frequency Transformer: 3 million pieces, Low Frequency Transformer 1 million pieces.

The company  of Shenzhen is focused on research&development, What is the most important, we established an independent laboratory for car magnetic: salt spray test, high humidity test, high-temperature test, cold and hit shock test, Etc which can meet all the test requirements.

The base of Fujian can offer our customers first-rate mass production with a lower cost at high rate products.

Our products are widely used in many fields, such as household appliances, new energy, industrial supplies, and electric tools. It can be customized by customers and we can provide total design solutions to our customers if needed. We enjoyed a high reputation and keep reliable cooperation with global valued customers such as Panasonic, Funai, Cosel, Honeywell, Jabil, Otis, FPHC, Future, GE, TCL, FPA, ABB, CKP,EATON.

We insist on pursuing superior quality and scientific management, not only the independent laboratory for car magnetic. But also We try our best to insist on technological innovation, improvement and introducing automatic equipment. we can keep supplying high quality, lower cost, competitive products for our customers continuously. 

Our products can be customized according to the requirements of customers, what's more, we can provide total design solutions to our customer if needed 


Company Advantages

1. We are a professional Magnetic component manufacturer with over 16 years of experience in designing and producing and Exporting.
 

2. Big production capacity: The factory acreage is about 24800 square meters,  total production capacity reached 8 million pieces of transformer series per month.

3. Strictly QC inspecting rules: all products must be 100% inspected before delivery.

4. OEM/ODM services are available.

5. We have an independent order system, with the overall tracking function from raw materials purchasing to finished goods outgoing.

6. We have got ISO9001:2015 quality management system; ISO14001:2015 environment management system; health and safety management systems-Requirement, IATF16949, UL certification. 

7. Independent laboratory for car magnetic. It meets all the car component test.

8. We have 2 factories which can meet a variety of demands.

 

Q & A:

Question 1: What is your payment term?

     Answer: T/T 30% in advance and balance 70% before shipment or L/C at sight.

 

Question 2: What is your delivery term?

      Answer: EXW, FOB, CFR, CIF

 

Question 3: What about Lead time?

     Answer: normally, it takes about 7 to 30 days after receiving your advance payment.

 

Question 4: Can you produce according to our samples?

     Answer: Yes, we can produce according to your samples or technical drawing, we will make the molds and fixtures.

 

Question 5: What is your sample's policy?

     Answer: We provide the sample according to your requirements, and you get to pay the sample's fee and courier freight, we will return
                   the sample fee to you once you confirm the normal order.

Question 6: Do you test all your goods before delivery?

      Answer: Yes, we have 100% test before delivery.

 

Question 7: How do you make our business longterm and good relationship?

     Answer: Firstly, we provide good quality products with competitive price, to ensure our customer's benefit;

                   Secondly, we respect our customers as our friends, grow up together.

Kindly Reminder:

1. About the SAMPLES. Please provide specific specifications or sample material, we will evaluate your products, design and produce samples.
2. About PRICE. Transformers are custom products, due to the different materials and design, even if the same model, the price is not the same. The price also depends on the complexity of the  parameters and the amount of orders.
3. About SHIPPING. Samples in 3-5 days; mass production in 7-15 days.
4. Packaging, logistics, according to the specific requirements of the purchase and sale contracts.
             
Tips: the freight shown on the website is for reference only, and the                      specific freight will be calculated according to the actual delivery amount.


1. Proofing time: the sample preparation time is generally 1-2 working days.

2. Sample preparation fee: samples are free of charge within 10 yuan at the market discount price, and the sample fee is required for more than 10 yuan.

3. Proofing freight: borne by the customer.

Production delivery period:

1. Date calculation starting point: Based on the confirmation date of receiving customer order, start to calculate the production time and delivery period:

2. Production delivery period: under 50 sets, 3-5 working days, more than 50 sets, can be specifically agreed with customers;

Payment method and tax ticket description:

1. Payment method: the contract shall prevail.

2. About invoice: in order to facilitate customers and reduce the cost of customers, our factory offers and cooperates in many ways: a excluding tax price, B value-added tax invoice price; 4: Packing description and packing data]

Our factory will pack according to the requirements of customers:

1. General packaging: the outer packaging is a carton, the inner packaging is a protective film or PE plastic bag. The specific packaging quantity must be determined according to the product size;

2. Special packaging: mainly for high-power outer packaging, wooden box / board is used, and the inner packaging is PE protective film

3. Packing data: for customers who need to export, the packing adopts wooden box, and the inner packing is PE protective film; The size of wooden box can be customized according to the specific situation.

After sales commitment: Hot line of customer service number: 0755-23190596

1. Report in the whole process: proofing, sending samples, production, delivery, receiving, etc.

2. Spare parts production: generally, 3 ‰ of the order quantity, and otherwise agreed in special cases.

3. Problem solving: in case of any problem, you can take photos to us first. We promise to solve the problem for you first, and then define the responsibility of the problem to solve your urgent problems.
Welcome to contact us for more details:

   

 RESPONSIBILITY     •     PREFESSIONAL     •     QUALITY


Welcome to contact us:
Name: Alex

Shenzhen Yiyi Technology Co.,Ltd

Add: 501, No.11, Lane 1, NanZhuang New Village, XinZhuang Community,

         Matian residential, Guangming District, ShenZhen, GuangDong Province, China (ZIP: 518106)