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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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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
Air Quality Meters
All products
Air Quality Meters
Customizable
Ready to Ship
Smart Wifi CO2 Detector Monitor Air Quality Indoor Temperature & Humidity Tester NDIR Sensor for Grow Tent, Mushroom, Home
$34.93 - $38.81
Shipping: $31.80/piece
Min. Order: 1 piece
Add to cart
Smart CO2 Carbon Dioxide Indoor Air Quality Monitor Temperature Humidity Measurement for Bedroom, Rooms, Offices, Classroom
$63.89
Shipping to be negotiated
Min. Order: 5 pieces
Digital Thermostat Time Temperature Controller 1200W 10A, Heating/Cooling Time Control Modes for Appliances, Fish Tank, Etc
$10.97 - $13.20
Shipping: $11.34/piece
Min. Order: 5 pieces
Add to cart
CO2 Carbon Dioxide Monitor Indoor Air Quality Meter Tester 400~5000PPM Wall Mount / Tabletop Colored Screen Display NDIR Sensor
$16.96 - $19.14
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Mini Vehicle Car Carbon Monoxide CO Gas Detector Portable Digital Meter W/ Lanyard Clip Audible & Visual Alarm RV, Aircraft
$49.09 - $54.54
Shipping: $6.36/piece
Min. Order: 5 pieces
Add to cart
Portable Design CO2 Carbon Dioxide Monitor Digital Display w/ Dual Beam NDIR Technology, Color Indicator & Chart Display
$48.13 - $53.47
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Digital Hydrogen Sulfide (H2S) Gas Detector With Audible, Visual, Vibration Alarm Function & Advanced MCU Control
$58.07 - $64.52
Shipping: $11.34/piece
Min. Order: 5 pieces
Add to cart
Multi-function CO2 PM2.5 Air quality detector Temperature Humidity monitor (OEM Packaging Available)
$48.89 - $65.43
Shipping to be negotiated
Min. Order: 100 pieces
Digital Air Quality Monitor Detector PM2.5/PM1.0/PM10/HCHO/TVOC/Temp & Humidity (OEM Packaging Available
$48.89 - $55.90
Shipping to be negotiated
Min. Order: 1 set
Digital Thermo-Hygrometer Dew point Wet Bulb Temperature Humidity Sensor with Backlight
$11.83 - $14.61
Shipping to be negotiated
Min. Order: 1 piece
Portable Air Quality Ozone(O3) Gas Detector Temperature & Humidity Tester Meter Office, Indoor, Outdoor (OEM Packaging Available
$51.81 - $67.95
Shipping to be negotiated
Min. Order: 50 sets
Digital Portable Mini Carbon Dioxide Temperature Humidity Detector with Buzzer
$32.32 - $38.24
Shipping to be negotiated
Min. Order: 1 piece
Multifunctional AIQ Analyzer CO2 PM2.5 PM10 HCHO TOVC Temperature Humidity Monitor NDIR Detector (OEM Packaging Available)
$60.00 - $83.95
Shipping to be negotiated
Min. Order: 100 sets
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
Professional Digital Humidity Temperature Psychrometer Wet Bulb Temperature with Dew Point Replaceable Probe
$46.38
Shipping to be negotiated
Min. Order: 50 pieces
Multi-function Digital Meter With Thermometer, Hygrometer, Calendar and Clock Alarm Function for Household, Office, School, Etc
$6.00 - $8.40
Shipping to be negotiated
Min. Order: 50 pieces
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