PV Guider is established by experienced PV experts, all the members have more than 10 years experience in PV research, production and installation. We help customers control the quality of PV plants and modules, including: # Factory Due Diligence - Verify the capability of the module supplier # PV Module Pre-shipment Inspection - Check the quality of the delivered products # In-line Quality Control - Monitor the production process and QC of the delivered products # On-site Plant Inspection - EL, IR inspection of installed PV modules on the rack # On-site Module EL Inspection - EL inspection of PV modules before installation # PV plant upgrade - Diagnosis and improvement of PV plants