Shanghai Greatway is an ISO9001:2008 certified professional manufacturer of auto-related products and inverter welding machine, including booster cables, jump starters, battery testers, battery chargers, inverter welder machine, inverter plasma cutter and battery accessories. All are manufactured in our own three factories: Shanghai Guangwei Electric & Tools Co., Ltd., Shanghai Power Station Co., Ltd., and Shanghai Greatway Welding Equipment Co., Ltd. Our products are widely used in automotive service stations, small factories, garages, and other areas of auto service. Most of our products have UL, GS, CE, PSE, and other certifications.