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GAIN EXPRESS HOLDINGS LIMITED
HK
12
YRS
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
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Top picks
Product categories
NEW ARRIVALS
Air Quality Meters
Automotive Testing Equipment
Water Quality Meters
Fishing Tackles/Gears
Dental Loupe
Gemological Instruments / Jeweler Tools
Health, Fitness & Sports
Inspection Cameras / Endoscopes / Borescopes
Microscopes / Ring Lights / Illuminators
Multimeters / Clamp Meters
Measuring Instruments
OEM Products
Ozone Generator
Refractometers
Tension Tester
Water Level Alarm
Weather Station
Ungrouped
High Sensitivity Handheld Precision Combustible Methane Propane Gas Leak Detector Alarm Sensor 40-640ppm Range
$61.83
/
piece
50 pieces
(Min. Order)
Brix Refractometer ATC High-Concentrated Sugar Solution Content Test 0-32% Homebrew Tester Meter (OEM Packaging Available)
$8.64 - $10.40
/
set
1 set
(Min. Order)
6 in 1 Professional Multi-parameter Water Quality Monitor Tester pH/ ORP/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter
$62.16
/
piece
5 pieces
(Min. Order)
6 in 1 Professional Multi-parameter Digital Multi-function Water Quality Monitor Tester pH/ ORP/ EC/ CF/ TDS PPM/ Temperature
$62.16
/
piece
5 pieces
(Min. Order)
Portable Film Coating Thickness Gauge Tester Meter 0~1.80mm/0-~71.0 mil Non-magnetic Coat (OEM Packaging Available)
$13.54
/
set
10 sets
(Min. Order)
Portable Film Coating Thickness Gauge Tester Meter, Automotive Car Nondestructive, Car Trading, Inspection, Non-magnetic Coat
$13.54
/
piece
10 pieces
(Min. Order)
Soil PH, Moisture & Light Meter for Garden Farm Lawn Household Indoor Outdoor (Silver)
$3.74
/
piece
20 pieces
(Min. Order)
Soil pH, Moisture & Light Meter 3 Way Tester Kit Plants Growth Watering Quality Monitoring Checker Gardening Acidity Probe Test
$3.51
/
piece
20 pieces
(Min. Order)
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Mini Digital Metal Coating Thickness Gauge Car Paint Tester Automotive Tool Colored Screen High Definition Measurement Meter
$74.37 - $82.41
/
piece
1 piece
(Min. Order)
Radiation Detector Meter Measurement Range 0-9.99mW/cm2, 2450MHz Professional Microwave Oven Leakage Tester
$12.90 - $15.20
/
piece
40 pieces
(Min. Order)
Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control Water Quality Meter Measurement 110V or 220V
$72.08 - $80.04
/
piece
1 piece
(Min. Order)
Digital Window Tint Meter Visual Light Transmission 18mm Thickness Continuous Measuring
$95.12 - $105.41
/
piece
1 piece
(Min. Order)
EMF Meter Electric & Magnetic Field Radiation Detector Digital Tester Colored Screen Handheld Tool Measurement
$17.32 - $19.55
/
piece
1 piece
(Min. Order)
Portable Ultrasonic Thickness Meter Tester Gauge Metal and Non-Metal 1000~9999m/s Measurement
$57.90
/
piece
10 pieces
(Min. Order)
Dual Display Humidity & Temperature Psychrometer Meter Thermo-Hygrometer Wet Bulb Dew Point Portable Tester Measurement
$12.82
/
piece
5 pieces
(Min. Order)
FM-207_2K Digital Force Meter Gauge Pull & Push Magnitude Test Tester N / kg / lb / g Measurement for Manufacturing, Electronics
$120.48 - $129.87
/
piece
1 piece
(Min. Order)
Digital Force Meter 1K Gauge Pull & Push Magnitude Test Tester Newton meter Newton N / kg / lb / g Measurement
$120.48 - $129.87
/
piece
1 piece
(Min. Order)
Data Logger Thermo-hygrometer Thermometer Temperature and Humidity Datalogging Measurement w/ PC Software and Calendar Display
$29.56 - $33.36
/
piece
5 pieces
(Min. Order)
Single Cylinder pH Electrode/ plus BNC Long Cable 2 Calibration Solutions 0.00~14.00PH Measuring Range
$7.50 - $10.50
/
piece
30.0 pieces
(Min. Order)
Digital Force 20K Meter Gauge Pull & Push Magnitude Test Tester Newtonmeter Newton N / kg / lb / g Measurement, Manufacturing
$120.48 - $129.87
/
piece
1 piece
(Min. Order)
2-in-1 Digital Protractor Angle Ruler 200mm (8inch) Angle & Length Measurement for Home Improvement, Woodworking, Workshop
$7.32 - $8.90
/
set
1 set
(Min. Order)
New Digital Window Tint Meter 0-100% Light Transmission Transmittance Tester 4000 Continuous Measurement for Car Window Vehicle
$85.98 - $95.27
/
piece
5 pieces
(Min. Order)
Smart CO2 Carbon Dioxide Indoor Air Quality Monitor Temperature Humidity Measurement for Bedroom, Rooms, Offices, Classroom
$63.89
/
piece
5 pieces
(Min. Order)
Smart Sound Level Tester 30dB to 130dB Decibel Meter Colored LED Screen Display Temperature Humidity Measurement
$26.20 - $29.57
/
piece
1 piece
(Min. Order)
Digital Force 5K Meter Gauge Pull & Push Magnitude Test Tester Newtonmeter Newton N / kg / lb / g Measurement, for Manufacturing
$120.48 - $129.87
/
piece
1 piece
(Min. Order)
2-in-1 Digital Protractor Angle Ruler Angle & Length Measurement 300mm (12inches) for Home Improvement, Woodworking, Workshop
$11.51 - $13.90
/
set
1 set
(Min. Order)
Digital Handheld Lux Light Level Illuminance Meter Measuring 0Lux~200kLux Temperature with Backlight
$11.65 - $14.20
/
piece
1 piece
(Min. Order)
Digital High Accuracy Sound Level Noise Meter Measuring 35dB~135dB Temperature Frequency with Backlight
$11.66 - $14.39
/
piece
1 piece
(Min. Order)
Digital PAR Meter Full-Spectrum Quantum PPFD Tester for Plant Photosynthetic Activity Measurement(OEM Packaging Available)
$57.83 - $64.25
/
piece
5 pieces
(Min. Order)
Digital 2 in 1 pH ORP Controller with Output Power Relay Control Water Quality Tester online measure(OEM packaging available)
$75.88
/
set
10 sets
(Min. Order)
Handheld Par Meter PPFD Tester Up to 3999umol/(m2s) Measurement For for Green House and Led Grow Lights (OEM Packaging Available
$75.85 - $85.90
/
piece
1 piece
(Min. Order)
Salinity Meter with Temperature Celsius / Fahrenheit Measure 70ppt Water Quality Tester IP65
$22.81 - $25.74
/
piece
1 piece
(Min. Order)
Digital Screen Tension Meter Tester 7~40 N/cm for Printing Stencil Production Quality Assurance Force Newton Measurement
$162.65 - $175.32
/
piece
1 piece
(Min. Order)
TDS / EC Meter 2-in-1 Pentype Digital Water Quality Tester with ATC Temperature Measurement for Water Analysis Hydroponics
$4.50
/
piece
20 pieces
(Min. Order)
200cm Long pH Electrode w/ Calibration Powder, BNC Cable Connector for Continuous Liquid Measurement (OEM Packaging Available)
$10.53 - $12.67
/
piece
5 pieces
(Min. Order)
ORP REDOX Electrode 50 OHM BNC Type Connector for ORP Meter Tester Monitor Controller -2000~2000mV Measure w/ 200cm
$7.31 - $8.80
/
piece
1 piece
(Min. Order)
Water Activity Meter Food Water Activity Analyzer for Food Dried Fruit Grain Vegetable AW Monitor (OEM Packaging Available)
$325.30 - $341.77
/
set
1 set
(Min. Order)
High Accuracy Measuring 30dB-130dB with Data Record Function Sound Level Meter with Backlit Display Compact Professional
$24.05 - $27.14
/
piece
5 pieces
(Min. Order)
Multi-parameter 5-in-1 Water Quality Meter Wall-mountable PH EC CF TDS (ppm) Temperature Tester (OEM Packaging Available)
$43.46 - $48.29
/
set
1 set
(Min. Order)
Leeb Hardness Meter Tester 170-960 HLD Durometer D 9 Materials Measurement Gauge Test Kit (HRB HRC HV HB HS HL) Iron Bronze
$216.87 - $227.85
/
piece
1 piece
(Min. Order)
5-in-1 Water Quality Multi-parameter Wall-mountable PH EC CF TDS (ppm) Temperature Test Meter Backlight Pond Drinking
$43.46 - $48.29
/
piece
1 piece
(Min. Order)
Professional Wind Speed Air Flow Temperature Digital Anemometer Instrument Air Volume Direction Humidity Data Hold
$37.13 - $41.26
/
piece
1 piece
(Min. Order)
ORP Redox Electrode, BNC Type Connector Replacement Probe 300cm Extra Long Cable 14cm Long 1.2cm Diameter
$16.16 - $18.24
/
piece
1 piece
(Min. Order)
3-axis EMF ELF RF Electromagnetic Wave Field Strength Radiation ElectroSmog Microwave Meter 38mV to 11V/m Range Taiwan Made
$72.00 - $83.00
/
piece
500 pieces
(Min. Order)
Digital Clamp Meter DC AC Voltage AC Current Resistance Diode Audible Continuity Temperature with 1999 Reading
$13.35 - $15.07
/
piece
1 piece
(Min. Order)
3-Axis Piezoelectric Vibration Meter Accelerometer Sensor Displacement Velocity Acceleration Measure Periodic Motion
$301.20 - $316.46
/
piece
1 piece
(Min. Order)
Digital Vibration Meter Vibrometer Gauge Tester Analyzer 10Hz-10kHz Measures Acceleration Velocity Displacement RPM Frequency
$180.72 - $189.87
/
piece
1 piece
(Min. Order)
Digital Multi-Grain Moisture Meter Tester Rice Wheat Corn New 6 - 30% Range Measures 36 kinds of Grains
$62.50 - $69.44
/
piece
1 piece
(Min. Order)
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