European and American quality, Chinese price and services to our customers! Shenzhen Sanful Technologies Ltd., a high-tech company specializing in GPS tracking systems developing and supplying, was founded in 2005 in Shenzhen, China. We mainly focus on vehicle GPS tracking for private cars and motorcycles, fleet GPS tracking for buses, taxis, trucks and boats, and portable GPS tracking for kids, old people and pets. During 7 years fighting in this field, Shenzhen Sanful Technologies Limited ...