Your requirements.
Our eyes on the ground.
From choosing a factory to releasing a shipment, get independent checks that turn uncertainty into a clear next step.
Independent checks. Documented findings.Choose the check your order needs.
Book a targeted visit or combine services. We agree the scope, timing and criteria with you before the inspection.
FA
Factory Audit (FA)
Assess your supplier before placing an order.
A factory audit assesses a manufacturer’s production facilities, quality controls and working practices before you approve a supplier or place an order. It helps buyers understand whether the factory’s capabilities match their product requirements.
Greenwire visits the factory, reviews relevant documents and examines how procedures are applied on the production floor. Depending on your requirements, the assessment covers incoming materials, production equipment, work instructions, staff training, calibration records, product traceability and the handling of nonconforming goods.
For solar and energy products, this can include checking how components are identified, how production and test records are maintained, and how defects are separated from accepted goods.
You receive a report with photographs, observations and identified gaps to discuss with the supplier. The audit evaluates the factory’s systems and practices; individual orders can then be checked through production and shipment inspections.
Facilities and production processes · Incoming material controls · Equipment and calibration records · Traceability and quality management
Choose suppliers with better information.
Compare observed capabilities with the supplier’s promises.
Identify weaknesses before committing.
Understand where quality controls or documentation need improvement.
Set clear expectations.
Agree on the corrective actions and controls your order requires.
INI
During Production Inspection (INI)
Identify problems while production is still underway.
A during production inspection checks an order while it is being manufactured. It allows buyers to identify deviations while the factory can still adjust materials, assembly methods or production controls. The inspection is scheduled when the relevant manufacturing stages and enough products are available for meaningful checks.
Greenwire compares selected components, partly finished products and finished units with your agreed specifications. Checks can cover the bill of materials, workmanship, dimensions, identification, assembly methods and production progress.
For photovoltaic modules, the agreed scope may include reviewing or witnessing electrical and electroluminescence tests. The report distinguishes tests observed by our inspector from manufacturer records reviewed during the visit.
You receive photographs, findings and details of deviations requiring attention. Where corrective action is needed, a follow-up inspection can be arranged to check what has changed before dispatch.
Materials and components · Work instructions and assembly · In-process checks · Defects, rework and production status
Detect deviations earlier.
Address problems before they affect more of the order.
Understand production progress.
See the manufacturing and packing status observed during the visit.
Give the factory actionable feedback.
Support corrective work with documented observations and product references.
PSI
Pre-Shipment Inspection (PSI)
Check the finished order before authorising shipment.
A pre-shipment inspection examines finished goods before dispatch to assess whether they meet the agreed order requirements. It is normally performed when production is complete and the goods are accessible for sampling and inspection.
Greenwire checks a defined sample against your specifications, approved references and inspection criteria. The scope can include product identity, quantities, dimensions, workmanship, labels, accessories, packaging and agreed functional checks. Where an AQL sampling plan is used, the sample size and acceptance criteria are established before inspection.
Checks are adapted to the product. Battery-cell inspection, for example, may include dimensions, appearance and open-circuit voltage when specified. Capacity testing or other specialist measurements must be agreed separately.
Your report presents the inspected sample, photographs, measurements and deviations, while identifying checks that could not be completed. This gives you evidence to request corrections, arrange further checks or make a shipment decision. A sample inspection does not verify every unit.
Quantity and identification · Appearance and workmanship · Dimensions and agreed tests · Packaging, labels and supporting records
Check conformity with your order.
Compare finished goods with the requirements you approved.
Address defects before dispatch.
Raise concerns while the goods remain at the factory.
Make an informed release decision.
Review documented findings before authorising shipment.
CLS
Container Loading Supervision (CLS)
Document what leaves the factory and how it is loaded.
Container loading supervision checks the goods, packaging and visible container condition during loading. It helps buyers verify that the products and quantities being dispatched correspond to the agreed shipping documents.
Greenwire checks product references and quantities against the packing list, examines visible cartons or pallets, and records the container’s condition before loading begins. Observations can include damage, moisture, cleanliness or other visible concerns that may affect the cargo.
During loading, the inspector documents handling, arrangement and visible packaging condition. Container and seal numbers are recorded to connect the inspection report with the shipment.
For solar modules and other energy equipment, photographs of pallets, protective packaging and loading stages provide a useful record of conditions at dispatch. CLS complements product inspection: it documents loading rather than establishing the functional performance of the goods.
Product and quantity checks · Packaging and container condition · Loading observations · Container and seal identification
Verify the shipment’s contents.
Reconcile the loaded goods with the packing list.
Identify visible loading concerns.
Flag packaging, handling or container issues as they occur.
Maintain shipment traceability.
Keep a photographic record with container and seal references.
FAT
Factory Acceptance Testing (FAT)
Verify agreed equipment functions before delivery.
Factory Acceptance Testing evaluates equipment at the manufacturer’s premises against an agreed acceptance plan before delivery. It focuses on whether the configured equipment performs the specified functions under the defined test conditions.
Greenwire reviews the inspection requirements with you and witnesses the agreed tests at the factory. Depending on the equipment, checks may cover configuration, installed components, functional operation, operating interfaces, performance measurements and supporting documentation.
For an EV charging system, this could include observing a charging sequence, recording available test measurements and checking the required interface functions. For storage or other electrical equipment, the test plan must reflect the ordered configuration and the factory’s available test facilities.
Your report records the witnessed results, deviations, untested items and outstanding acceptance points. It helps you decide which corrections or repeat tests are needed before dispatch. FAT complements installation checks and commissioning at the destination.
Equipment configuration · Agreed functional and performance tests · Test records and documentation · Outstanding acceptance points
Verify the functions you specified.
Compare demonstrated operation with the agreed acceptance criteria.
Resolve gaps at the factory.
Identify missing features or incomplete work before delivery.
Prepare the equipment handover.
Keep a documented record of results and outstanding actions.
A report you can act on.
Photographs, observations, test results and clearly identified deviations — organized against your agreed inspection scope.
Get a sample reportOn-site checks and witnessed tests are distinguished from manufacturer records reviewed.
Sampling, tests and acceptance criteria depend on your product and project. Inspection does not replace product certification.
Use the findings to discuss corrective action, acceptance or further checks with your supplier.
Let’s plan your quality control.
Request a quote or receive a sample inspection report by email.
Choose your request and inspection service below.