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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
PH Electrode BNC Socket 0.00-14.00 pH Range And 300cm Cable 2 Calibration Solution(OEM Packaging Available)
$8.04 - $9.67
(Min. Order) 1 set
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
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Digital Gas Leak Detector 0~9999PPM Range Audible/Visual Alarm Gooseneck Semiconductor Sensor Propane, Natural Gas, Combustible
$33.45 - $37.17
Shipping: $11.34/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
Wifi Smart Combustible Gas Leak Detectors Loud & LED Alarm App Control For Natural Gas, LPG, Coal, Methane, Propane Etc
$13.91 - $15.70
Shipping: $7.46/piece
Min. Order: 5 pieces
Add to cart
Portable Gas Leak Detector Natural Gas Detector Combustible Gas Sniffer with Audible & Visual Alarm
$13.45 - $15.17
Shipping: $28.00/piece
Min. Order: 1 piece
3 sold
Add to cart
Portable 4-in-1 Multi Gas Leak Detector Monitor H2S/O2/CO/ Ex (LEL) IP65 Rechargeable Lithium Battery Gas Analyzer
$66.94 - $74.38
Shipping: $13.74/piece
Min. Order: 5 pieces
Add to cart
High Sensitivity Handheld Precision Combustible Methane Propane Gas Leak Detector Alarm Sensor 40-640ppm Range
$61.83
Shipping to be negotiated
Min. Order: 50 pieces
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
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
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
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
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
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
MAN-45 Professional Digital Manometer +/-13.78kPa +/-2PSI Suitable for 1-1 pipes,Ventilation,Air Condition System 11 units
$20.61 - $23.26
Shipping: $28.00/piece
Min. Order: 1 piece
1 sold
Add to cart
Ultrasonic Leakage Detector ULD-586 Frequency Response 20 KHz to 100 Khz(OEM packaging service available)
$130.00 - $175.00
Shipping: $31.80/set
Min. Order: 1 set
Add to cart
Ultrasonic Leak Transmitter, 40 KHz Frequency, Emit Ultra Sonic Wave Air Water Portable Handy Tester Tool Pipe Leaks Detection
$47.50 - $52.78
Shipping: $28.00/piece
Min. Order: 1 piece
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
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