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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
Soil PH Meter With Pointer Sensor For Gardener Indoor Outdoor Garden Farm Lawn Household
$9.19
(Min. Order) 30 pieces
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
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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
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
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
Digital Carbon Dioxide Temperature Humidity CO2 Monitor WB DP Tester Handheld CO2 Meter (OEM Packaging Service Available)
$93.50 - $103.90
Shipping: $44.40/set
Min. Order: 1 set
21 sold
Add to cart
Digital 6-in-1 Indoor Air Quality IAQ Meter CO2 + CO, Humidity RH%, Temperature, DP, WB, USB Data Logger w/ Software
$259.90
Shipping to be negotiated
Min. Order: 10 pieces
Indoor Air Quality IAQ Meter CO2, CO, Humidity RH%, Temperature, DP, WB, USB Data Logger(OEM Packaging Service Available)
$237.35 - $249.37
Shipping: $44.40/set
Min. Order: 1 set
Add to cart
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
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
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
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
Smart CO2 Detector Monitor Air Quality Indoor Temperature & Humidity Tester NDIR Sensor (OEM Packaging Available)
$34.93 - $38.81
Shipping: $12.55/piece
Min. Order: 5 pieces
Add to cart
CO2 Carbon Dioxide Monitor & Controller (Relay Function) w/ Remote Sensor for Home, Office, Hospital (OEM Packaging Available)
$93.90 - $108.90
Shipping to be negotiated
Min. Order: 1 piece
Digital CO2 Carbon Dioxide Monitor Detector 400~5000PPM NDIR Sensor Temperature Humidity Tester for Home, Office, Classroom Etc
$21.56 - $24.34
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Carbon Dioxide Monitor CO2 Controller w/ built-in Dual Beam NDIR Sensor,Auto Detect Day Night Function For Greenhouse, Mushroo
$93.90 - $108.90
Shipping: $37.30/set
Min. Order: 1 set
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
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
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