HangZhou Longwin Power Limited owns three major production bases.The total area covers 270,000 square meters.It has an experienced and well-educated R&D team and our products posses more than 100 R&D patents on electronic technology,battery technology and chemical application engineering.We offer OEM,ODM and advanced customization services to meet various needs from different clients.Our products have passed CE,ROHS,SONCAP,UL,ISO and other certifications and are exported to Asia,Africa,Europe,the Middle East,the Americas and other regions.We aim to provide the green,energy-saving and safe electrical energy safety emergency products for global users.Professional sales managers and technical engineers provide you thoughful services:short lead time and prompt delivery;3year warranty with worry-free after-sales service.No doubt that HangZhou Longwin Power Limited is your best are reliable business partner!