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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
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
All products
New
Customizable
Ready to Ship
pH & Temperature Meter 14.00 pH Range 3-Point Calibration Water Quality Tester with 3 Buffer Powder (OEM Packaging Available)
$4.32 - $5.55
Shipping: $2.44/piece
Min. Order: 100 pieces
Add to cart
Smart Mini WIFI 5-in-1 Water Quality Tester pH/TDS/SALT/S.G. & Temp Meter TUYA Smart App for Aquarium Hydroponics Pool Aqua
$25.22 - $28.46
Shipping: $11.34/piece
Min. Order: 5 pieces
Add to cart
Pentype 3-in-1 Conductivity Meter Multipoint Dustproof Calibration Hydroponics IP65 Waterproof Auto Power Off
$22.14
Shipping to be negotiated
Min. Order: 50 pieces
Foldaway 10X Magnifying Glass Magnification 21mm lens Triplet Optic Lens Jeweler Loupe Magnifier (OEM packaging available)
$9.03 - $10.86
Shipping: $14.00/set
Min. Order: 2 sets
Add to cart
30x Jeweler 20.5mm Gem Loupe Magnifiers Jewelry Triplet Lens Optical Magnification Hobbyists Stamp (OEM Packaging Available)
$6.27 - $7.55
Shipping: $14.00/set
Min. Order: 2 sets
Add to cart
30x Gem Loupe Magnifiers Jeweler 20.5mm Triplet Lens Coin Mechanics Machinists Optical Magnification
$6.27 - $7.55
Shipping: $14.00/piece
Min. Order: 2 pieces
Add to cart
AQM-338 Portable Tester Hydrogen Sulfide Detector H2S Monitor 0~100ppm Electrochemical H2S Sensor with LCD Screen Backlight
$30.02 - $33.88
Shipping: $14.95/piece
Min. Order: 5 pieces
Add to cart
All-in-1 Accurate Mountable Indoor Air Quality Monitor, Real-time CO2 & Temperature & Humidity Level with Visual & Alarm
$120.73 - $133.78
Shipping: $16.14/piece
Min. Order: 5 pieces
Add to cart
Portable/Wallmount Digital 4 Channel -328~2498 degree F/C K Type Thermocouple 2GB SD Card Temperature Thermometer Logger
$85.32 - $94.54
Shipping: $31.80/piece
Min. Order: 1 piece
2 sold
Add to cart
Indoor Air Quality Monitor All-in-1 CO2 & Temperature & Humidity Level Meter Mountable w/ NDIR Sensor (OEM Packaging Available)
$120.73 - $133.78
Shipping: $16.14/set
Min. Order: 5 sets
Add to cart
Dual Differential Manometer Gas Pressure Tester Meter, Backlight 12 Selectable Units Air Pressure Gauge W/ Data Storage Function
$32.50 - $36.11
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Soil pH, Moisture & Light Meter 3 Way Tester Kit (Green) for Garden Farm Lawn Household Indoor Outdoor Gardening
$2.97 - $3.58
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
3 Way Tester Soil pH, Moisture & Light Meter Kit (Green), Gardening Acidity Probe Test Tool Household Indoor Outdoor
$2.41 - $2.90
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Magnetic Mini Voice Activated Recorder 64GB Recording Device with Speaker 192kbps Sound Quality Long-Lasting Battery for Car Lec
$17.19
Shipping to be negotiated
Min. Order: 30 pieces
Digital Force Meter 1K Gauge Pull & Push Magnitude Test Tester Newton meter Newton N / kg / lb / g Measurement
$120.48 - $129.87
Shipping: $37.30/piece
Min. Order: 1 piece
Add to cart
Jewelry Loupe 20X Optical Magnifier 21mm 6 LED Light & UV Light Arts & Crafts Machinist Magnification (OEM Packaging Available)
$11.08 - $13.33
Shipping: $14.00/set
Min. Order: 2 sets
Add to cart
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