Pre-Shipment Inspections (PSI)

Hire our PV specialized quality engineers on-site at the factories in Asia

10+ Years

At the PV factories in Asia






Factories audited

What are Pre-Shipment Inspections (PSI)?

Pre-Shipment Inspections (PSI) on solar energy components allow you to assess whether the final PV components meet the agreed quality standard. A Pre-Shipment Inspection allows you to detect and replace any defects right after the manufacturing process.  

What are the advantages of Pre-Shipment Inspections (PSI)?
Inspecting your PV components prior to shipment offers the following advantages:

  • Reduce your costs: prevent any recalls / damage of your reputation by replacement of defect PV components prior to shipment
  • Avoid paying for any PV components that carry defects
  • Gain full insight on your PV product quality 'pre-shipment'
  • inspections on-site at solar factories
  • usage of advanced testing equipment
  • certainty about quality before paying the supplier

How are Pre-Shipment Inspections (PSI) performed?                                                                                 Pre-Shipment Inspections are usually performed once 100% of solar energy products have been manufactured, and over 80% of products have been packed. 

Pre-shipment inspections are executed according to the following procedure:

  • Client orders the Pre-Shipment Inspection with Sinovoltaics and the inspection is scheduled with the factory.
  • Once the PV components have finished production, our PV Quality Engineer will arrive on-site at the factory to perform an inspection according the agreed quality standard and according to strict sampling. 
  • Sampling is determined according to sampling standard ISO 2859-1:1999. Typically according to general inspection level G-II or G-III.
  • Any defects found will be documented and evaluated according to the Accepted Quality Limit (AQL). 
  • Based on analysis of results, Sinovoltaics will determine if your ordered PV components have passed or failed the inspection. You will be notified directly about the results.
  • A detailed inspection report will be issued within 2-3 working days.

What other PV-specialized quality inspection services do we offer?

Sinovoltaics' PV component inspections can be conducted at all stages of the manufacturing process. Pre-Shipment Inspections typically complement Production Monitoring. Sinovoltaics offers the following inspections:

What are your benefits implementing ZERO RISK SOLAR
Entrusting Sinovoltaics with the quality assurance of your PV components - your benefits:

  • 100% independent from suppliers and manufacturers
  • PV component-specialized quality engineers
  • comprehensive quality testing with strict attention to detail
  • apply our proprietary quality standards and inspection techniques
  • detailed, confidential and fast inspection reporting

Order inspection

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Pre-Shipment Inspection (PSI) expertise

  • PV modules
  • Inverters
  • Storage
  • Transformers
  • Solar cells

  • Combiner boxes
  • Cables
  • Isolators
  • Mounting structures
  • Trackers

Assuring PV component quality on-site in Asia for over 10 years...

Since 2009, our PV quality engineering team has helped companies worldwide assure the quality of their purchases in Asia.

Sinovoltaics is proud to work with the leading solar farm developers, financiers and insurers in the solar energy industry in over 35 countries.

Visit us at our offices in Shanghai or Hong Kong, or connect with our subsidiary in the USA.

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