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GAIN EXPRESS HOLDINGS LIMITED
HK
13
YRS
Main categories: industrial Endoscope,PH meter,Refractometer,Fish Finder,Lux Meter
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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
Digital Wood Moisture Meter Tester, 4 Pin, 5% - 40%, NEW DESIGN
$10.00 - $11.90
(Min. Order) 50 pieces
Digital Pen-type Redox Meter Tester -1999mV~1999mV Millivolts Water Quality Backlight LCD (OEM Packaging Available)
$12.06 - $14.51
(Min. Order) 1 set
Pen-Type pH Meter Water Quality Tester with Backlight Digital and Portable
$2.38 - $2.64
(Min. Order) 1 piece
Digital Protractor Angle Gauge Finder 4 x 90degree Bevel Box Inclinometer Level Meter Pocket Size (OEM Packaging Available)
$12.29
(Min. Order) 100 sets
Pentype Digital Water Tester 999mV ORP Meter Redox Waterproof Industrial Laboratory Use (OEM Packaging Available)
$37.10
(Min. Order) 30 sets
300cm long Cable ORP Electrode for ORP Meter Tester Controller (OEM packaging available)
$17.16 - $19.37
(Min. Order) 1 set
20x Magnification 20.5mm Jeweler Gem Loupe Triplet Lens Jewelry Optical Hobbyist Stamp & Coin (OEM Packaging Available)
$6.14 - $7.39
(Min. Order) 2 sets
3-in-1 Automotive Antifreeze Refractometer 1.100 - 1.400kg/l System Coolant Freezing Point (OEM Packaging Available)
$9.05 - $10.88
(Min. Order) 1 set
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pH / EC / Temperature Meter ATC 3 in 1 Waterproof Combo Multi-Parameter Tester Pool Spa Drinking Purity
$15.80 - $17.83
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
Digital pH ORP (2 in 1) Controller Electrode CO2, 110V
$74.39 - $82.43
Shipping: $37.30/piece
Min. Order: 1 piece
Add to cart
Sound Level Meter
Digital Sound Level Meter Calibrator 94dB & 114dB for 1/2" and 1" inch Microphone Portable w/ Backlight Calibration Tool
$78.05 - $86.49
Shipping: $28.00/piece
Min. Order: 1 piece
1 sold
Add to cart
Digital pH ORP 2 in 1 Controller with relay function to control CO2 system 110V(OEM Packaging Service Available)
$74.39 - $82.43
Shipping: $37.30/set
Min. Order: 1 set
Add to cart
ORP Redox Electrode, BNC Type Connector Replacement Probe 300cm Extra Long Cable 14cm Long 1.2cm Diameter
$16.16 - $18.24
Shipping: $28.00/piece
Min. Order: 1 piece
Add to cart
6 in 1 Professional Multi-parameter Digital Multi-function Water Quality Monitor Tester pH/ ORP/ EC/ CF/ TDS PPM/ Temperature
$62.16
Shipping to be negotiated
Min. Order: 5 pieces
pH / EC / Temperature Meter ATC 3 in 1 Waterproof Combo Multi-Parameter Tester Pool Spa Drinking Purity(OEM packaging available)
$15.80 - $17.83
Shipping: $28.00/set
Min. Order: 1 set
Add to cart
90-Degree 1.25" Diagonal Adapter Connector for Refracting Telescope Eyepiece Lens Zenith Mirror Prism (OEM Packaging Available)
$5.97 - $7.11
Shipping to be negotiated
Min. Order: 20 pieces
6 in 1 Multi-parameter pH/ ORP/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter Water Quality Meter (OEM Packaging Available)
$58.89
Shipping to be negotiated
Min. Order: 5 sets
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
Shipping: $37.30/piece
Min. Order: 1 piece
Add to cart
Diamond Moissanite Tester Gemstone 2pt Jewel Stone Combo Gem Test Jewelry Identifier Tool Equipment
$73.75 - $81.94
Shipping: $15.90/piece
Min. Order: 2 pieces
9 sold
Add to cart
Greenhouse CO2 Controller w/ 4.5 Meters Remote CO2 Sensor Auto Detect Day Night Function Perfect for Grow Rooms, Home, Offices
$93.90 - $108.90
Shipping to be negotiated
Min. Order: 1 set
21 orders
Professional Multi-parameter ORP Water Quality tester pH/ORP/Temp/Cond/TDS/Salt with ORP probe, Replaceable Probe
$97.56 - $108.11
Shipping: $31.80/set
Min. Order: 1 set
Add to cart
Water Activity Meter Food Water Activity Analyzer for Food Dried Fruit Grain Vegetable AW Monitor (OEM Packaging Available)
$325.30 - $341.77
Shipping: $37.30/set
Min. Order: 1 set
1 sold
Add to cart
Digital Sound Noise Level Tester Calibrator for Sound Level Meter 94dB & 114dB output Class I w/ Battery +/-0.3 db Accuracy
$78.05 - $86.49
Shipping: $28.00/piece
Min. Order: 1 piece
6 sold
Add to cart
Indoor Air Quality 9999ppm Digital Carbon Dioxide Temperature Humidity NDIR Sensor IAQ CO2 Monitor WB DP Tester CO2 Meter
$93.50 - $103.90
Shipping: $44.40/piece
Min. Order: 1 piece
10 sold
Add to cart
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