Shenzhen united& heading technology development co., ltd Facing the future, the people of UHLED strictly enforce ISO9001:2008 management system, by virtue of the advanced technical force, strict management, and excellent execution.Company sees talents as fundament, and takes the quality for life, depending on perfect technical support and after-sales service, together with special engineering contractor, partners and strategic partners to provide the best choice for end users and the best value-added service system