Voltage Meters
SDM003-3 AC Voltage Current Frequency Meter 50-500V 0-120A Digital LED Built-in CT DIN Rail Voltage Current Frequency Meter
- FOB Price
- $7.99
- MOQ
- 5 pieces
LOONG TEST SYSTEMS
Custom Test Systems for Demanding Industrial Applications
OEM/ODM configurations, application-specific fixtures and global B2B support from evaluation to delivery.
31Product Categories
OEM / ODMEngineered Configurations
GlobalB2B Support
PRODUCT RANGE
Testing Solutions by Category
From material performance to environmental reliability and precision measurement, configure the right system around your application.
01
Battery Testers
1075 products
02
Channel Letter Bending Machine
351 products
03
Clamp Meters
619 products
04
Cnc Milling Machines
854 products
05
Colorimeter
442 products
06
Common Rail Injector Tester
631 products
07
Drilling Machines
1297 products
08
Flash Point Tester
295 products
09
Flaw Detector
383 products
10
Gauges
1111 products
11
Hardness Testers
691 products
12
Industrial Endoscope
915 products
13
Industrial Metal Detectors
649 products
14
Internal Grinding Machine
129 products
15
Measuring Analysing Instrument Stock
517 products
16
Micrometers
371 products
MANUFACTURING CAPABILITY
Built with Engineering Discipline
From mechanical assembly and system calibration to final inspection and export preparation, every project follows a controlled delivery workflow.
Application FixturesDesigned around samples and test methods
Calibration ControlVerified measurement and system performance
Export ReadinessProtected packing and delivery documentation
HOT PRODUCTS
Recommended Test Systems
Frequently specified equipment for laboratories, quality teams, manufacturers and global sourcing projects.
Voltage Meters
120*120 LED Display Digital Three Phase Voltage Panel Meter AC 12V Voltmeter Mini Car Voltmeter
- FOB Price
- $14.09
- MOQ
- 5 pieces
Voltage Meters
AOTAI T96 VHZ 4-Digit LED Voltage Frequency Dual Display Single Phase Panel Meters AC50-500V 1% PVC Operating Temp
- FOB Price
- $2.70-4.30
- MOQ
- 5 pieces
Vernier Calipers
150 mm Electronic Digital Caliper Dial Vernier Caliper
- FOB Price
- $1.35-1.80
- MOQ
- 10 pieces
Vernier Calipers
Dasqua 0 500mm 0 2000mm 0 40 Inch Monobolock Vernier Caliper Nib Style Jaws 0 20” Analog Heavy Duty Caliper Big Size Caliper
- FOB Price
- $91.87-95.20
- MOQ
- 1 piece
Vernier Calipers
Dasqua 5 150 mm 5 200mm 5 300mm Digital Centerline Caliper Electronic Center Hole Distance Caliper Measuring Tool
- FOB Price
- $99.73-103.35
- MOQ
- 1 piece
Testing Equipment
Touch Screen 5kN Tensile Tester Plastic Film Peel Test Equipment ISO Standard
- FOB Price
- $1,580-2,580
- MOQ
- 1 piece
Testing Equipment
Dust Test Chamber Sand and Dust Proof Test Equipment for Automotive Parts and Electronic Products
- FOB Price
- $4,000-8,000
- MOQ
- 1 set
APPLICATION-LED ENGINEERING
Configured Around Your Standards
Bring us the product, method or validation target. We align the machine, fixtures, controls and workflow into one practical test solution.
01
Materials & Structural Testing
Application-specific fixtures and test configurations for metals, polymers, cables and engineered components.
02
Environmental & Reliability Validation
Temperature, humidity and accelerated reliability systems configured around your product and validation standard.
03
Electrical & Measurement Solutions
Integrated instruments and measurement workflows for electrical safety, performance and production verification.
B2B PROJECT WORKFLOW
A Clear Path from Requirement to Delivery
Technical decisions, commercial terms and delivery milestones stay visible throughout the project.
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01
Requirement Discovery
Share samples, standards, capacity and target results.
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02
Engineering Review
Our engineers evaluate fixtures, methods and system scope.
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03
Configuration & Quote
Receive a clear technical configuration and B2B quotation.
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04
Drawing & Sample Approval
Confirm drawings, interfaces and acceptance requirements.
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05
Production & Quality Inspection
Equipment is built, calibrated and checked before release.
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06
Packing, Delivery & Support
Export packing, documentation and responsive after-sales support.
