KKmoon 100MHz Function Signal Generator High Precision Digital DDS Dual-channel Function Signal/Arbitrary Waveform Generator
Опис
Features:
Adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals.
2.4 inch TFT color LCD with 320*240 resolution, simultaneously display parameters and graphics of CH1 and CH2.
Adopt MagicPulse Technology, Low Jitter(RMS)200ps.
The instrument uses 14-bit high-speed D/A converter chip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution.
Can output up to 99 groups of functions / arbitrary waveform, contains 35 groups of preset waveforms and 64 groups of user-defined waveforms. Preset waveforms: Sine, Square (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, CMOS(0~12V), Four channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, DC etc.
Enable to store 64 arbitrary waveform data files, each one of waveform storage depth 8192 points * 14bits; (The longer the waveform storage depth, the more detail the waveform is saved, and the signal details can be restored with high precision.)
Various modulation types: AM, FM, PM, ASK, FSK and PSK modulations.
Sweep Function: it can sweep 4 properties of signals including frequency, amplitude, offset and duty cycle; It has Linear and Logarithm two sweep types; 0.01S~999.99S sweep time; Up, Down and roundtrip sweep directions.
VCO Function (Voltage Control Output): can be achieved by an external input signal: voltage controlling frequency, voltage controlling amplitude, voltage controlling offset, voltage controlling duty cycle and PWM modulations.
Burst Output Function: there has Manual Trigger, internal CH2 Trigger, and External Trigger for your options. It can output 1~1048575 pulse trains.
100M Frequency Meter Function: it can measure frequency, period, pulse width and duty cycle. Max. frequency workable is 100MHz and Min. frequency workable is 0.01 Hz.
Counter Function: it has 2 coupling measure modes including DC coupling and AC coupling. This design can solve inaccuracy problem of AC coupling.
Standard dual full functional channels which are equivalent to two independent generators.
Channel SYNC Function: support waveform copy and state copy between channels.
Support two or more signal generators connected to achieve multi-channel output, the maximum support 16-channel synchronous output, the phase between each channel can be adjusted.
Precisely adjust the phases of the two channels. Precision can be 0.01.
Min amplitude resolution can be up to 1mV. Amplitude range is 0~24Vpp.
Duty-cycle of each channel can be adjusted independently 0.01%-99.99%, the adjusting resolution is 0.01%.
-12V~+12V DC Offset function. Resolution 0.001V.
Save Function: it can save 20 sets user-set parameters and can be loaded at any time.
Communicating Function: all functions can be controlled by PC program and the communication protocol is open for secondary development.
Output Short-circuit Protection: all channels can work more than 60 seconds when the load is short-circuited.
Provide powerful waveform editing PC software. Users can download arbitrary waveform to this instrument after edit through PC program which is included in user CD.
Adopt ABS plastic shell with table type design. Use 100-240V (AC) wide range voltage power supply.
Specification:
Plug Type: AU / EU / US / UK (Optional)
Frequency
Model
FY6900-100M
Sine
0~100MHz
Square
0~25MHz
Ramp, Triangle
0~10MHz
Pulse
0~10MHz
TTL/CMOS
0~10MHz
Arbitrary Waveform
0~10MHz
Minimum Pulse Width
20ns(All models of pulse wave minimum width can reach 20ns)
Min. Resolution on all frequency range
1μHz (Min. resolution can reach 1μHz on all frequency range to ensure adjusting accuracy under high frequency. For example, it can output 10.000000000001MHz signal).
Accuracy
20ppm
Stability
1ppm/ 3hours
Waveform Characteristics
Waveforms
Sine, Square,Rectangle (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, Sawtooth Wave, CMOS, Four channels TTL, DC, Half wave, Full wave, Positive Step, Inverse Step, Positive Exponent, Inverse Exponent, Lorenz Pulse, Multitone, Noise, ECG, Trapezoidal Pulse, Sinc Pulse, Narrow Pulse, Gauss White Noise, AM, FM, and other 64 sets customer-defined waveform.
Non-Volatile Storage
Can store 64 user-defined arbitrary waveforms, (8K 14bits) * 64
Waveform Length
8192points * 14bits
Sampling Rate
250MSa/s
Vertical Resolution
14 bits
Sine
Harmonic Suppression
50dBc(1MHz); 45dBc(1MHz~20MHz);
Total Harmonic Distortion
0.5% (20Hz~20kHz,0dBm)
Rectangle
Rise/Fall Time
7ns (VPP5V)
Overshoot
5%
Duty Cycle
0.01%~99.99% (Resolution 0.01%)
Sawtooth Wave
Linearity
99% (0.01Hz~10kHz)
Output characteristics
Amplitude(VPP)
Frequency5MHz: 1mVpp~24Vpp;
5MHzFrequency10MHz: 1mVpp~20Vpp;
10MHzFrequency20MHz: 1mVpp~10Vpp;
Frequency20MHz: 1mVpp~5Vpp;
Resolution
1mV
Amplitude Stability
0.5%/ 5 Hours
Amplitude flatness
2.5%(10MHz);5%(10MHz)
Waveform Output
Impedance
50Ω10%(Typical)
Protection
All channels can work more than 60 seconds when the load is short-circuited.
DC Offset
Offset Range
Frequency20MHz: 12V;Frequency20MHz: 2.5V;
Offset Resolution
1mV
Phase Feature
Phase range
0~359.99
Phase resolution
0.01
TTLOutput
TTL Level Amplitude
3Vpp
Fan-out
8 TTL LOAD
Rise/Fall Time
10ns
CMOSOutput
Low Electric Level
0.3V
High Electric Level
1V~12V
Rise/Fall Time
18ns
External Measurement
Function
Frequency, Period, Positive/Negative Pulse Width, Duty Cycle
Input Voltage Range
1Vpp~20Vpp
Frequency Meter
Resolution
0.01Hz(Gate Time = 100S)
Range
0.01Hz~100MHz
Sensitivity
Gate Time 3 grades (1S, 10S, 100S) adjustable
Counter
Range
0-4294967295
Coupling
DC, AC
Working Mode
Manual
Period
Measurement Range
5ns ~ 20s
DC coupling measurement
Pulse Width
Measurement Range
0ns ~ 20s
Resolution
5ns
Duty Cycle
Range (Display)
0% ~ 100%
Sweep
Carrier Waveform
Sine, Square, Ramp, Arbitrary(except DC)
Sweep Type
Linear or Logarithm
Sweep Direction
Up, Down and roundtrip sweep directions
Sweep Objects
Frequency, Amplitude, Offset, Duty Cycle
Sweep Time
0.01S~999.99S/Step
Setting range
Starting position and Finishing position can be set arbitrarily.
Sweep Range
Decided by Parameters setting.
VCO (Voltage Control Output)
Modulation signal range to input
0~5V
VCO signal frequency range
0-2000Hz
VCO control object
voltage controlling frequency (VCF), voltage controlling amplitude (VCA), voltage controlling offset, voltage controlling duty cycle.
VCO special function
Can Amplitude Modulate (AM) or Frequency Modulate (FM) by external analog signal.
Modulation
Modulation Type
AM, FM, PM, ASK, FSK, PSK
Carrier Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform (Except DC)
AM
Source
Internal (CH2) / External (VCO IN Port)
Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform
Depth
0% to 120%
Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;
FM
Source
Internal (CH2) / External (VCO IN Port)
Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform
Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;
PM
Source
Internal (CH2) / External (VCO IN Port)
Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform
Phase Deviation
0 to 360
Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;
ASK
Source
Internal (CH2), External (ASK IN Port), Manual
Modulating Waveform
Square with 50% duty cycle.
Key Frequency
1μHz~10MHz
FSK
Source
Internal (CH2), External (FSK IN Port), Manual
Modulating Waveform
Square with 50% duty cycle.
Key Frequency
1μHz~10MHz
PSK
Source
Internal (CH2), External (PSK IN Port), Manual
Modulating Waveform
Square with 50% duty cycle.
Key Frequency
1μHz~10MHz
Burst Function
Carrier Waveform
Sine, Square, Ramp, Arbitrary(except DC)
Burst Count
1~1048575
Trigger Source
Manual, Internal, External (AC/DC)
General
Adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals.
2.4 inch TFT color LCD with 320*240 resolution, simultaneously display parameters and graphics of CH1 and CH2.
Adopt MagicPulse Technology, Low Jitter(RMS)200ps.
The instrument uses 14-bit high-speed D/A converter chip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution.
Can output up to 99 groups of functions / arbitrary waveform, contains 35 groups of preset waveforms and 64 groups of user-defined waveforms. Preset waveforms: Sine, Square (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, CMOS(0~12V), Four channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, DC etc.
Enable to store 64 arbitrary waveform data files, each one of waveform storage depth 8192 points * 14bits; (The longer the waveform storage depth, the more detail the waveform is saved, and the signal details can be restored with high precision.)
Various modulation types: AM, FM, PM, ASK, FSK and PSK modulations.
Sweep Function: it can sweep 4 properties of signals including frequency, amplitude, offset and duty cycle; It has Linear and Logarithm two sweep types; 0.01S~999.99S sweep time; Up, Down and roundtrip sweep directions.
VCO Function (Voltage Control Output): can be achieved by an external input signal: voltage controlling frequency, voltage controlling amplitude, voltage controlling offset, voltage controlling duty cycle and PWM modulations.
Burst Output Function: there has Manual Trigger, internal CH2 Trigger, and External Trigger for your options. It can output 1~1048575 pulse trains.
100M Frequency Meter Function: it can measure frequency, period, pulse width and duty cycle. Max. frequency workable is 100MHz and Min. frequency workable is 0.01 Hz.
Counter Function: it has 2 coupling measure modes including DC coupling and AC coupling. This design can solve inaccuracy problem of AC coupling.
Standard dual full functional channels which are equivalent to two independent generators.
Channel SYNC Function: support waveform copy and state copy between channels.
Support two or more signal generators connected to achieve multi-channel output, the maximum support 16-channel synchronous output, the phase between each channel can be adjusted.
Precisely adjust the phases of the two channels. Precision can be 0.01.
Min amplitude resolution can be up to 1mV. Amplitude range is 0~24Vpp.
Duty-cycle of each channel can be adjusted independently 0.01%-99.99%, the adjusting resolution is 0.01%.
-12V~+12V DC Offset function. Resolution 0.001V.
Save Function: it can save 20 sets user-set parameters and can be loaded at any time.
Communicating Function: all functions can be controlled by PC program and the communication protocol is open for secondary development.
Output Short-circuit Protection: all channels can work more than 60 seconds when the load is short-circuited.
Provide powerful waveform editing PC software. Users can download arbitrary waveform to this instrument after edit through PC program which is included in user CD.
Adopt ABS plastic shell with table type design. Use 100-240V (AC) wide range voltage power supply.
Specification:
Plug Type: AU / EU / US / UK (Optional)
Frequency
Model
FY6900-100M
Sine
0~100MHz
Square
0~25MHz
Ramp, Triangle
0~10MHz
Pulse
0~10MHz
TTL/CMOS
0~10MHz
Arbitrary Waveform
0~10MHz
Minimum Pulse Width
20ns(All models of pulse wave minimum width can reach 20ns)
Min. Resolution on all frequency range
1μHz (Min. resolution can reach 1μHz on all frequency range to ensure adjusting accuracy under high frequency. For example, it can output 10.000000000001MHz signal).
Accuracy
20ppm
Stability
1ppm/ 3hours
Waveform Characteristics
Waveforms
Sine, Square,Rectangle (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, Sawtooth Wave, CMOS, Four channels TTL, DC, Half wave, Full wave, Positive Step, Inverse Step, Positive Exponent, Inverse Exponent, Lorenz Pulse, Multitone, Noise, ECG, Trapezoidal Pulse, Sinc Pulse, Narrow Pulse, Gauss White Noise, AM, FM, and other 64 sets customer-defined waveform.
Non-Volatile Storage
Can store 64 user-defined arbitrary waveforms, (8K 14bits) * 64
Waveform Length
8192points * 14bits
Sampling Rate
250MSa/s
Vertical Resolution
14 bits
Sine
Harmonic Suppression
50dBc(1MHz); 45dBc(1MHz~20MHz);
Total Harmonic Distortion
0.5% (20Hz~20kHz,0dBm)
Rectangle
Rise/Fall Time
7ns (VPP5V)
Overshoot
5%
Duty Cycle
0.01%~99.99% (Resolution 0.01%)
Sawtooth Wave
Linearity
99% (0.01Hz~10kHz)
Output characteristics
Amplitude(VPP)
Frequency5MHz: 1mVpp~24Vpp;
5MHzFrequency10MHz: 1mVpp~20Vpp;
10MHzFrequency20MHz: 1mVpp~10Vpp;
Frequency20MHz: 1mVpp~5Vpp;
Resolution
1mV
Amplitude Stability
0.5%/ 5 Hours
Amplitude flatness
2.5%(10MHz);5%(10MHz)
Waveform Output
Impedance
50Ω10%(Typical)
Protection
All channels can work more than 60 seconds when the load is short-circuited.
DC Offset
Offset Range
Frequency20MHz: 12V;Frequency20MHz: 2.5V;
Offset Resolution
1mV
Phase Feature
Phase range
0~359.99
Phase resolution
0.01
TTLOutput
TTL Level Amplitude
3Vpp
Fan-out
8 TTL LOAD
Rise/Fall Time
10ns
CMOSOutput
Low Electric Level
0.3V
High Electric Level
1V~12V
Rise/Fall Time
18ns
External Measurement
Function
Frequency, Period, Positive/Negative Pulse Width, Duty Cycle
Input Voltage Range
1Vpp~20Vpp
Frequency Meter
Resolution
0.01Hz(Gate Time = 100S)
Range
0.01Hz~100MHz
Sensitivity
Gate Time 3 grades (1S, 10S, 100S) adjustable
Counter
Range
0-4294967295
Coupling
DC, AC
Working Mode
Manual
Period
Measurement Range
5ns ~ 20s
DC coupling measurement
Pulse Width
Measurement Range
0ns ~ 20s
Resolution
5ns
Duty Cycle
Range (Display)
0% ~ 100%
Sweep
Carrier Waveform
Sine, Square, Ramp, Arbitrary(except DC)
Sweep Type
Linear or Logarithm
Sweep Direction
Up, Down and roundtrip sweep directions
Sweep Objects
Frequency, Amplitude, Offset, Duty Cycle
Sweep Time
0.01S~999.99S/Step
Setting range
Starting position and Finishing position can be set arbitrarily.
Sweep Range
Decided by Parameters setting.
VCO (Voltage Control Output)
Modulation signal range to input
0~5V
VCO signal frequency range
0-2000Hz
VCO control object
voltage controlling frequency (VCF), voltage controlling amplitude (VCA), voltage controlling offset, voltage controlling duty cycle.
VCO special function
Can Amplitude Modulate (AM) or Frequency Modulate (FM) by external analog signal.
Modulation
Modulation Type
AM, FM, PM, ASK, FSK, PSK
Carrier Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform (Except DC)
AM
Source
Internal (CH2) / External (VCO IN Port)
Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform
Depth
0% to 120%
Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;
FM
Source
Internal (CH2) / External (VCO IN Port)
Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform
Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;
PM
Source
Internal (CH2) / External (VCO IN Port)
Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform
Phase Deviation
0 to 360
Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;
ASK
Source
Internal (CH2), External (ASK IN Port), Manual
Modulating Waveform
Square with 50% duty cycle.
Key Frequency
1μHz~10MHz
FSK
Source
Internal (CH2), External (FSK IN Port), Manual
Modulating Waveform
Square with 50% duty cycle.
Key Frequency
1μHz~10MHz
PSK
Source
Internal (CH2), External (PSK IN Port), Manual
Modulating Waveform
Square with 50% duty cycle.
Key Frequency
1μHz~10MHz
Burst Function
Carrier Waveform
Sine, Square, Ramp, Arbitrary(except DC)
Burst Count
1~1048575
Trigger Source
Manual, Internal, External (AC/DC)
General
Характеристики
| OriginalPrice: | 306.99 |
| Warehouse: | CN |
Графік зміни ціни & курс обміну валют
Користувачі також переглядали

$6.34
1Pcs Multifucntional Industrial Sewing Machine Seam Guide With Magnet Guide Home Sewing Machine Hem Guide
aliexpress.ru
$24.20
Толстовка мужская с капюшоном, стильная мягкая хлопковая флисовая толстовка в стиле аниме боку, без героев Академии 80-х годов, с символом мира, европейский размер
aliexpress.ru
$17.30
2-осевой бесщеточный карданный контроллер BGC 3,1/PTZ контроллер драйвера двигателя с датчиком 6050 для FPV мультиротор запчасти
aliexpress.ru
$14.75
Блок блока предохранителей с лопастями и плавкими предохранителями, 12 В, 80 А, 4 шт.
aliexpress.ru
$17.52
Пляжное бикини, летний купальник, сексуальный комплект из двух предметов, женское бикини в этническом стиле с регулируемой шнуровкой
aliexpress.ru
$10.22
Сменный резак для фольги 31B для лезвия 360 380 390 5414 5610 5612 5877 5770 5775
aliexpress.ru
$20.82
Шикарные весенние женские джинсы Южной Кореи, с высокой талией, приталенные с двумя пуговицами, дизайн с двумя карманами, слегка расклешенные брюки
aliexpress.ru
$142.12
Бесплатная доставка, простая Современная матовая Настольная лампа для спальни, гостиной, прикроватная лампа, настольная лампа для кабинета, светодиодная Ночная лампа, домашний декор E27
aliexpress.ru
$11.30
2.4G Wireless For PS3 Controller GamePad Mobile Game Controller Joystick For PS3/PC/Android Phone/TV Game Controller
aliexpress.ru
$13.53
Сменные детали, боковые щетки, Фильтры Hepa, накладки для швабры, совместимые с Ilife V3 V5, аксессуары для пылесоса
aliexpress.ru
$21.59
Men's Linen Shirt Summer Shirt Beach Shirt Black Beige Short Sleeve Plain Crew Neck Spring Summer Hawaiian Holiday Clothing Apparel Basic
miniinthebox.com
$84.56
Оригинальный аккумулятор Dolidada для электрического велосипеда, 52 в, 45000 мАч, 30 А, фотоаккумулятор 52 в с аккумулятором для электровелосипеда, шт...
aliexpress.ru
$1.12
No Ear Hole Chain Ear Clip Fashion Personality Copper Inlaid Zircon C-shaped Ear Bone Clip One-piece Cold Wind Ear Jewelry
aliexpress.ru
$5.23
Оцинкованная медная Тормозная Линия, стандартный комплект рулонных катушек, гибкие фитинги всех размеров, устойчивые к коррозии и ржавчине
aliexpress.ru
$15.69
Dulzura, осенняя сексуальная одежда Y2K, с длинным рукавом, с открытой спиной, с Боковым Разрезом, облегающие макси платья для женщин, 2022, Клубные ...
aliexpress.ru
$22.09
Перезаряжаемая по USB кофемолка мельница портативное электрическое устройство для измельчения кофейных зерен и перца бытовой кухонный инст...
aliexpress.ru
$12.66
Cleaning Tools Washing Machine Cleaner Effervescent Tablet Deep Cleaning Washer Deodorant Remove Stain Detergent Washing Machine
aliexpress.ru
$9.47
1Pcs Chopsticks Basket Kitchen Utensil Holder Multipurpose PP Bamboo Cutlery Organizer Table Rack Kitchen Utensil Holder
aliexpress.com
$2.57
1PC Summer Beach Light Coffee Color Bohemian Coconut Beaded Necklace for Men Tribal Wooden Beads Surfer Necklace Man Jewelry
aliexpress.com
$12.17
Life is Strange 2 Wolf Brothers Tapestry Room Decor House Decor Wall Hanging Tapestry
aliexpress.com
$1.42
6m Car Reverse Video Cable High Definition Backup Camera Power Video Cable Composite Extension Wire Parking Monitor
aliexpress.com
$321.38
Car Tail Lamp Auto Rear Light Lamp Taillight Tail Light For Hilux REVO 2015 2016 2017 2018
aliexpress.com
$2.53
5Pcs Artificial Flower Silk Peony Wedding Bridal Bouquet Outdoor Garden Home Living Room Refrashing Decor DIY Vase Filler Wreath
aliexpress.com
$6.59
Portable Manual Coffee Grinder,304 Stainless Steel Hand Crank Mill with Ceramic Mill Core,Scale & Wooden Handle,Coffee Maker
aliexpress.com
$393.29
Extra Large Tent 4-6/6-8/8-12 Person Waterproof Double Layer Camping Tent Shelter Tent
aliexpress.com
$0.76
4Pcs Cat Bowl Shallow Flat Pet Food Container Easy to Use for Short Legged Cats Cat Bowl Flat Pet Bowls Round Bowls for Cats
aliexpress.com
$15.69
VLT-HC7800LP Accessories of projector lamps for Mitsubishi HC7800 HC7800D HC7800DW HC7900DW HC8000 HC8000D HC8000 Projectors
aliexpress.com
$114.28
and Modern Leisure Simple Tables Courtyard Outdoor Chairs Milk tea shop Coffee Shop iron art color outdoor Garden Chairs Table
aliexpress.com
$9.78
Coffee Mat Absorbent Thick Pvc Countertop Protector For Coffee Maker Machine Dish Drying Kitchen Bar Accessory
aliexpress.com
$7.69
Art Foundation Acrylic Black Border Magnetic Phone Case Cover for IPhone 17 16 15 14 13 12 Pro Max Case
aliexpress.com
$4.20
6 Pcs Popcorn Pens Party Bubble Colorful Multicolor Adorable Marker DIY Drawing Cute Markers
aliexpress.com
$3.94
with Mirror Jewelry Storage Box Moisture-proof Dustproof Jewelry organizer Exquisite Sqaure Earring Storage Case
aliexpress.com
$31.72
Qty(2) Hood Struts for Skoda Karoq (NU7) 2017-present Front Bonnet Modify Gas Springs Shock Absorbers Lift Supports Dampers
aliexpress.com
$44.33
Starter Motor For Yamaha YZF R15 R125 R125A MT125 MT125A WR125 WR125R WR125X 5D7-81890-00 5D7-H1890-01 5D7-81890-01 38B-H1800-01
aliexpress.com
$40.46
Professional Vocal Beautification EX-3000 Actuator Effects Audio Stage Microphone Gain Processor
aliexpress.com
$4.74
Toner Chip Reset for Lexmark CX-924 CS 921 CS 923 CX 920 CX 921 CX 922 CX 923 CX 924 de dte dxe 76C00K0 76C00C0 76C00M0 76C00Y0
aliexpress.com
$1.94
6pcs Fondant Cake Painting Brushes Set White Sugar Craft Tools For Cookie Scribers Fine Line Drawing 3D Flower Design Cake
aliexpress.com
$2.92
French ARMY camouflage men's T-shirt, Commando Army-Veteran 3D Special forces short-sleeved tactical shirt men's clothing
aliexpress.com

















