Joinwit specializes in designing, R & D, manufacturing and selling optical fiber components and test equipments such as Coupler workstations, Light sources, Power meters, Optical Talk Sets.Multi Meter, Visual Fault Finder, Optical Fiber Identifier.Cable break Locator, Fiber Optic Splice Closure, Optical Fiber Terminal Box ,OTDR and Passive Components such as couplers, attenuators, connectors, patchcord, pigtails, splitters, adapters..etc.

Joinwit established in 1998, we are experienced In the field of optical fibers engineering instrument. As one of the largest manufacturers in China in Optical Fiber Test Instruments. we wish to take this opportunity to express our desire to enter into business relations with your company.