Pre-shipment inspection (PSI) is one of the many quality control tests conducted by LONGSUN SOLARELECTRIC CO.,LTD. This inspection is based on standard QC testing or on customer request. Based on these criteria and procedures, samples are randomly selected and defects are checked. For us, pre-shipment inspection is an important step in the quality control process and a way to check the quality of the foldable solar panel before shipment.
Over the years, LONGSUN SOLARELECTRIC CO.,LTD Longsun Solar Panel has been a major round solar panels manufacturing base in China. As one of LONGSUN SOLARELECTRIC CO.,LTD Longsun Solar Panel's multiple product series, 1kw Fi Low Price Pure Sine Wave Power Inverter series enjoy a relatively high recognition in the market. The product features resistance to repeated sterilization. It can endure repeated sterilization cycles such as chemical, steam or gamma radiation sterilization without significant damage. Its arrosion resistance makes it not vulnerable to acid rain. LONGSUN SOLARELECTRIC CO.,LTD Longsun Solar Panel has went through continuous development and extension. Its low voltage-temperature coefficient allows better output under high temperature.
Constant excellence and constant quality assurance are of great importance to Longsun. Get an offer!