How we work

An instrument supplier that starts from the measurement

Selection, calibration and service support for maintenance and laboratory teams.

Learn about our test and measurement instrument company: our factory, quality control and OEM/ODM service for global trade buyers.

Scope: Electrical test, precision weighing, gas and flue analysis, optical inspection, laboratory reference
Build formats: Handheld, bench and panel instruments across the range
Calibration: Certificate issued per instrument, not per shipment
Service: Recalibration, repair and firmware updates after delivery

Calibration bench with a reference instrument linked to a dial thermometer unit under test

Printed calibration certificate stamped with an approval mark and carrying the serial number of one instrument

Configuration, calibration and packing stations arranged as one left-to-right production flow

Calibration bench — every unit is verified against reference equipment before it is released.

Certificates carry the serial number of the individual instrument.

Configuration, calibration and packing planned as one flow, not three suppliers.

Three views of the same process: verification, documentation, dispatch.

Built around the measurement job

One source across families, one answer per instrument

A service team does not want four suppliers, four certificate formats and four recalibration dates. It wants one place where the model, the certificate and the accessories agree.

About Us

We are an experienced manufacturer and exporter of test and measurement instruments, serving distributors, importers, laboratories and industrial buyers around the world. Our product range covers jewelry and gemstone testers, precision balances and scales, analyzers, gas detectors, optical inspection instruments and laboratory equipment.

What We Do

We focus on testing, measuring and inspection instruments. Our in-house capabilities cover mechanical and electronic assembly, sensor calibration, software configuration and full pre-shipment testing, which allows us to control quality and cost at every step.

Why Choose Us

Full product range: one-stop sourcing for jewelry testers, analyzers, precision balances, gas detectors, optical instruments and accessories.
OEM/ODM expertise: custom branding, packaging, firmware and specifications for your market.
Certified quality: ISO 9001 factory, CE-certified products and instruments calibrated and life-cycle tested before shipment.
Export experience: stable lead times, container loading optimization and complete export documentation.

Our mission is simple: help partners worldwide source reliable, accurate and affordable testing instruments, and support their business growth with dependable supply and responsive service.

Contact our team today to discuss your market requirements, request samples or start an OEM project.

What working with us means

Four commitments we are held to

Specification before stock

Range, accuracy class, safety category and accessory list are reviewed against the application before anything is committed to stock.

Verified on receipt

Units and accessories are checked for identity, quantity, firmware version and physical condition before they enter the service process.

Paperwork travels with the instrument

Each unit leaves with its own calibration certificate and verification record, identified by serial number and listing the reference equipment used.

Service after delivery

The recalibration interval your quality system requires is agreed when the order is placed and recorded against the serial.

How the range grew

From single-family meters to a matched, documented range

Electrical test and maintenance

Handheld multimeters, clamp meters and insulation testers for service crews working on live industrial systems.

Material analysis and precision weighing

Analytical balances, moisture analysers and laboratory reference instruments for quality-control benches.

Combustion, gas and optical inspection

Flue-gas analysers and optical or dimensional inspection instruments for combustion and production lines.

Gemstone and jewellery verification

Diamond and gemstone testers with the care and finishing equipment that keeps a counter or workshop running.

Records and documentation

What your quality team can ask for

Certificate

Datasheets

Range, accuracy class, safety category and accessory list for the models you are quoting.

Calibration certificates

Issued per instrument with the serial number and the reference equipment identified on the record.

Declarations and test records

Declarations for the destination market and verification records kept per unit and per order.

Selection, configuration and service capability

Specification, configuration, calibration and dispatch in one flow

Default units, language, limits and logging interval set per order
Firmware build version written and recorded against the serial
Calibration certificate issued with the reference equipment identified
Own model number, manual cover and case labels for private-label programmes
Leads, clamps, probes, sensors and cases selected per application
Certificate, declaration, test record and packing list inside the carton

sales@greenserveware.com

+8617899881680

Bench balance with a stable green readout, a level indicator and a reference weight beside it

Configuration and calibration flow — units arrive, are configured, verified and packed under one process.

We manufacture a complete range of test and measurement instruments, including diamond and gemstone testers, synthetic diamond screeners and analyzers, precision balances and jewelry scales, portable gas analyzers, plus jewelry care equipment and spare parts.

Yes. We provide full OEM/ODM services: your logo printed on the housing or shown on the start screen, custom housing colors, branded packaging, user manuals in your language and customized specifications such as measurement range, display size, data interface and accessory sets.

The standard MOQ is 100-200 units per model depending on the product line. For customized colors, logos or packaging the MOQ is usually 500 units. Mixed-model container orders are welcome, and we can help you combine products to fill a 20ft or 40ft container.

Absolutely. Samples of standard models are available from stock and normally ship within 3-5 days by express. Sample cost and freight are payable in advance and refundable against your first bulk order. Customized samples take about 7-15 days.

Standard production lead time is 25-35 days after deposit and confirmation of all details. Customized orders may need 35-45 days. Sea freight transit time depends on your port; we arrange FOB, CIF or door-to-door delivery as required.

Every unit is calibrated and passes function and accuracy checks against reference standards before packing. Housings use durable ABS or stainless steel, sensors and load cells are life-cycle tested, and batteries are certified. Our factory runs ISO 9001 quality management and our products carry CE certification.

Discuss your next instrument programme

Share the measurement job and the destination market for a quotation within one business day.

Manufacturing