OTC. Original Technology Creating the life!The owner of two Manufacturers, ORIENTEC and TANVE.ORIENTEC was founded in 1996 and became the LED lighting supplier since 2004; the emergency lighting expert since 2006.TANVE was founded in 2002, The professional lighting of low voltage out door LED facilities. Camping lighting, working lighting, head lighting.OTC is an all-around enterprise. which is comprehensive in R & D; focus on IEC standards and precious conceptions.