the samples are available for on-site testing, laboratory testing, and third-party testing, and will be ready within 7 working days. We provide a warranty against defects in material and workmanship for quality control of inverters, offering free replacement parts at 2% of the confirmed order quantity from the date of delivery. Our after-sales service focuses on customer satisfaction, with a commitment to resolving any service issues within 48 hours. Based on ISO9001 quality assurance, our OEM services involve effective teamwork across sales, procurement, design, production, QA/QC, and R&D departments to ensure high-quality products and prompt delivery. We offer custom packaging design, label design, warranty cards, and catalogs.
