Established in May 2004, Shenzhen Syhdee Manufactory Co., Ltd. is one of the leading manufacturers specialized in R&D, producing of LED tubes only. Syhdee believes that concentration makes professionalism.There are more than 180 staff, 18 of which make up of the R & D team in charge of electronic & power engineers, appearance structure & package, chips, industrial design and illuminant efficiency. It is the powerful R & D team that controls and guarantees the stable performance of products as well as new LED technology trend.