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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
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
Gloss Surface Meter 0.1-200 GU Tester Meter 20deg 45deg 75deg for Ceramics Films Textiles Rechargeable Reflectometer Triple
$216.87 - $227.85
(Min. Order) 1 piece
3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC (OEM packaging available)
$20.65 - $23.30
(Min. Order) 1 set
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
(Min. Order) 1 set
23 orders
Digital CO2 IAQ Monitor Controller 45M Cable NDIR Sensing Probe w/ Relay Function Green House Home, Office, Factory
$93.90 - $108.90
(Min. Order) 1 piece
CO2 Carbon Dioxide Monitor & Controller (Relay Function) w/ Remote Sensor for Home, Office, Hospital (OEM Packaging Available)
$93.90 - $108.90
(Min. Order) 1 piece
5 orders
OEM Products
All products
OEM Products
Customizable
Ready to Ship
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
Digital PAR Meter Full-Spectrum Quantum PPFD Tester for Plant Photosynthetic Activity Measurement(OEM Packaging Available)
$57.83 - $64.25
Shipping: $7.46/piece
Min. Order: 5 pieces
57 sold
Add to cart
Smart Food Thermometer W/ Bluetooth Function 98.42Ft. Range for Oven, Grill, Kitchen, BBQ, Meat IP67 (OEM Packaging Available)
$26.25 - $29.62
Shipping: $5.60/piece
Min. Order: 5 pieces
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
200cm Long Cable pH Electrode Probe BNC Connector for PH Meter Monitor Controller Test Sensor (OEM Packaging Available)
$4.81 - $5.79
Shipping: $6.36/piece
Min. Order: 5 pieces
Add to cart
Digital K/J Probes Dual Channel Thermocouple Thermometer Wired & Stainless Steel Home Appliances (OEM Packaging Available)
$14.70 - $16.59
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
50 OHM ORP REDOX Electrode BNC Type Connector for ORP Meter Tester Monitor Controller (OEM Packaging Available)
$7.31 - $8.80
Shipping: $6.36/piece
Min. Order: 5 pieces
Add to cart
CO2 Carbon Dioxide Smart Indoor Air Monitor Temperature Humidity for Bedroom, Rooms, Offices,Classroom (OEM Packaging Available)
$63.89
Shipping to be negotiated
Min. Order: 50 pieces
Smart PH ORP Redox Controller Tester With Monitoring and Dosing Wireless App Remote Online Monitor (OEM Packaging Available)
$46.54 - $51.71
Shipping: $19.89/piece
Min. Order: 5 pieces
Add to cart
Combustible Portable Gas Leak Detector Methane, LPG, LNG, Fuel, Sewer Gas. Alcohol, Gasoline (OEM Packaging Available)
$13.45 - $15.17
Shipping: $6.36/piece
Min. Order: 5 pieces
Add to cart
Smart Water Quality Meter 6-in-1 pH / EC / TDS / Salinity / SG / Temperature Online APP Monitoring (OEM Packaging Available)
$29.76 - $33.59
Shipping: $16.14/piece
Min. Order: 5 pieces
Add to cart
Smart Water Quality Tester PH/ ORP/ EC/ Free Chlorine/ Salinity/ Temperature, 6-in-1 Floating Tester (OEM Packaging Available)
$29.84 - $33.67
Shipping: $10.14/piece
Min. Order: 5 pieces
Add to cart
Pentype Dissolved Oxygen Meter Rechargeable with 3-Meter Self-Floating Probe (OEM Packaging Available)
$79.27 - $87.84
Shipping: $11.34/set
Min. Order: 5 sets
Add to cart
NEW Grain Moisture Meter 9" Probe Water Content Analyzer for 14 Grains Wheat Corn Rice Peanut Etc. (OEM Packaging Available)
$10.11 - $12.16
Shipping: $10.14/piece
Min. Order: 5 pieces
Add to cart
NEW Handheld Pocket-size Socket Tester Receptacle Detector Indicator W/ Red Light for Household Safety (OEM Packaging Available)
$5.66 - $6.81
Shipping: $5.60/piece
Min. Order: 5 pieces
Add to cart
NEW Pentype 7-in-1 PH Meter TDS/EC/ORP/Salinity/S.G./Temp. Tester For Drinking Water, Aquariums, Pool (OEM Packaging Available)
$15.02 - $16.95
Shipping: $6.36/piece
Min. Order: 5 pieces
Add to cart
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